Ratio and Proportion

It is important to understand the relationship between ratio and proportion.                       A ratio compares two quantities of the same kind. Proportion compares the size of a part of with the whole.  

See the following example

Questions often ask for the answer to be written in its simplest form. See the following example

Now try these questions

Write the ratio of shaded squares to white squares in its simplest form.

Write the proportion of the shape shaded in as a fraction in its simplest form.

A JOKE 

Lord Nelson was 5ft 6 inches. His statue is 17ft 4 inches.

That’s Horatio of 1:3