Math Tutorial 4.3 - Proportion

There are 6 lessons in this math tutorial covering Proportion. The tutorial starts with an introduction to Proportion and is then followed with a list of the separate lessons, the tutorial is designed to be read in order but you can skip to a specific lesson or return to recover a specific math lesson as required to build your math knowledge of Proportion. you can access all the lessons from this tutorial below.

In this Math tutorial, you will learn:

  • What is proportion?
  • What is the difference between proportion and ratio?
  • What is the difference between proportion and rate?
  • What are the names of the outer and inner terms of a proportion?
  • How many types of proportion are there? What is the difference between them?
  • How do you express a direct proportion graphically?
  • How do you express an inverse (indirect) proportion graphically?
  • What is the graph shape for direct/indirect proportion? Why?


You are travelling by car at low speed but you notice that you are late. What do you do? How does the increase of speed affect the distance travelled? What about the time elapsed? How does the increase in speed affect the travelling time?

Suppose you have to complete a job alone in five days but you are not able to do so. What do you do in this case? Can you complete the task within this deadline if friends come and help you? How does the number of people affect the time to complete the task? How does the number of people affects the amount of work done?

In this tutorial we discuss proportion and its types. This is because proportion is a very important concept that shows how two quantities are related to each other. Proportions are very common in daily real life situations.

Please select a specific "Proportion" lesson from the table below, review the video tutorial, print the revision notes or use the practice question to improve your knowledge of this math topic.

Ratio and Proportion Learning Material
Tutorial IDMath Tutorial TitleTutorialVideo
Lesson IDMath Lesson TitleLessonVideo
4.3.1Definition of Proportion
4.3.2Direct Proportion
4.3.3Graph of Direct Proportion
4.3.4Cross Product in Direct Proportion
4.3.5Inverse (Indirect) Proportion
4.3.6Graph of Inverse Proportion

Whats next?

Enjoy the "Proportion" math tutorial? People who liked the "Proportion" tutorial found the following resources useful:

  1. Math tutorial Feedback. Helps other - Leave a rating for this tutorial (see below)
  2. Ratio and Proportion Video tutorial: Proportion. Watch or listen to the Proportion video tutorial, a useful way to help you revise when travelling to and from school/college
  3. Ratio and Proportion Revision Notes: Proportion. Print the notes so you can revise the key points covered in the math tutorial for Proportion
  4. Ratio and Proportion Practice Questions: Proportion. Test and improve your knowledge of Proportion with example questins and answers
  5. Check your calculations for Ratio and Proportion questions with our excellent Ratio and Proportion calculators which contain full equations and calculations clearly displayed line by line. See the Ratio and Proportion Calculators by iCalculator™ below.
  6. Continuing learning ratio and proportion - read our next math tutorial: Properties of Proportion. Geometric Mean

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