## More About Ratio Tables

## Opening

# More About Ratio Tables

If you multiply both quantities in a ratio by the same number, the resulting ratio will be equivalent to the original ratio. The calculations that follow illustrate how you can use this method to generate the ratio in column G by starting with the ratios in columns B or C.

$1.25:1=\frac{1.25}{1}=\frac{1.25\cdot 364}{1\cdot 364}=\frac{455}{364}=455:364$

$5:4=\frac{5}{4}=\frac{5\cdot 91}{4\cdot 91}=\frac{455}{364}=455:364$

Notice that the numbers in the ratio table are not arranged in order of size. The values in ratio tables in general do not have to follow any particular order.

- If the ratio of students to computers stays the same, how many computers would be needed if the class size grew to 40 students?