Ratio Tables

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

A ratio can be written in three ways: as a fraction (a/b), with a colon (a:b), or with the word 'to' (a to b).

A ratio table is a table that displays pairs of numbers that form equivalent ratios.

A = 10, because 2/3 = A/15 leads to A = 10.

An equivalent ratio is a ratio that expresses the same relationship between two quantities, even if the numbers are different.

To find missing values, use equivalent ratios and cross-multiply if necessary.

The value of a ratio a to b is expressed as $$\frac{a}{b}$$ .

The equivalent ratio is 20:90.

Identify the known values and the relationship between the quantities.

The quantities are 36 and 45.