1. Proportions

2. An equation stating that two ratios are equivalent is called a proportion. 200 Miles 4 Hours 50 Miles 1 Hour = An equation stating that two ratios are not equivalent is called nonproportion. 200 Miles 4 Hours 25 Miles 1 Hour =

3. Two ratios have to be equivalent for the equation to be proportional. EX 1)2 3 Determine if the two ratios are proportional. 4 6, 2 3 2 3 4 6 ÷ ÷ 2 2 = Since, 2 3 2 3 = Yes, these ratios are proportional EX 2)8 24 6 20, 4 12 3 10, 1 3 3 = No, these ratios are nonproportional

4. EX 3) Find a ratio equivalent to each ratio. 7 8 1. Simplify or multiply by one. X X 2 2 14 16 = EX 4) 22 15 X X 2 2 44 30 = EX 5)Complete the table. squares circles 248 16 24 8 6 32 4 16 ÷ ÷ 4 4 1 4 = 2 2 X 2 8 =

5. Notes start here

6. Proportions Date ___________

7. An equation stating that two ratios are equivalent is called a __________. An equation stating that two ratios are not equivalent is called __________.

8. Two ratios have to be __________ for the equation to be proportional. EX 1) Determine if the two ratios are proportional., EX 2),

9. EX 3) Find a ratio equivalent to each ratio. EX 4) EX 5)Complete the table. squares circles