"The Meaning of Proportion" Proportion PPT Courseware 2

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"The Meaning of Proportion" Proportion PPT Courseware 2

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1. What is ratio?

The division of two numbers is also called the ratio of the two numbers.

2. What is ratio?

The quotient obtained by dividing the first term of the ratio by the second term of the ratio is called the ratio.

Two ratios from which of the following groups can form a proportion? Write down the proportions of the composition.

6:10 and 9:15 6:10 and 9:15

Because: 6∶10 = 0.6 9:15 = 0.6

So: 6:10 = 9:15

Because: 20∶5 = 4 1:4 = 0.25

Therefore: 20:5 and 1:4 cannot form a ratio.

fill in the blank

If the ratios of two ratios are equal, then the two ratios are ( ) proportional.

For a ratio, the ratio of the left side of the equal sign to the ratio of the right side of the equal sign must be ( ).

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Update Time: 2024-11-16

This template belongs to Mathematics courseware People's Education Press Mathematics Volume 2 for Sixth Grade industry PPT template

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