**Ratio:** The relation between two similar magnitudes with respect to the number of times the first contains the second.

Ex: 6 to 9 , 6:9 and 6/9

**Rate:** A ratio that compares two quantities measured in different units.

Ex. 15 to 20 or 15:20

**Proportion: **Comparative relation between things or magnitudes as to size , quantity , number , ratio.

**1)** 5 hours to travel 360 miles is about 72 mph.

÷2

h 5 1

---- ----- = -----

m 360 72

÷2

**2)** 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.

x4

aj 25ml 100ml

---- --------- = ----------

oj 50ml 200ml

x4

**3)** What are the three ways you can prove that equivalent ratio statements are true?

3/4=12/16 diagonally (multiply top left and bottom right) vertically, and horizontally.

Here is a **video** to help you guys out..

4.

2. I don' think its fair because the guy that stole $3B he only got **3 years** and the other guy stole $100,told the police about it, and he got **15 years**.

here are** 2 links** for you guys to practice about proportions and ratios.

http://www.shodor.org/unchem/math/r_p/index.html

http://www.ezschool.com/EZSheets/Number_Sense/Ratio/

I hope the links helped you!!

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