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## Wednesday, October 19, 2011

### Alyssa's Proportion Post

Ratio: A RATIO is a statement of how two numbers compare. It is a comparison of the size of one number to the size of another number.
Rate: A RATE is a ratio that expresses how long it takes to do something, such as traveling a certain distance

ProPorTion: A PROPORTION is an equation with a ratio on each side. It is a statement that two ratios are equal.

Proportion Statement:

5 hours to travel 360 miles is about _____mph

divided by 1
Hours        5                           1
______   ____________ = _____________
Miles        360                        1
divided by 1

As a playgroup worker, if I increase the amount of apple juice I am serving at the playgroup from 25 ml to 100 ml, how much should I increase the the orange juice to, to keep the quantities in the same proportion? The orange juice is 50 ml to start with.

divided by 4
25                 100
______   =   ________
50                12.5
divided by 4

It is fair, because the hobo could have got more criminal records than that, and the rich man probably didnt have that much criminal records, and so its based on how much crimes was made.