Proportions check

Are the two ratios proportional?

• YES
• NO

Solve the proportion below

• 21
• 7
• 8
• 24

Solve the proportion below:

• 3

• 24

• 21

• 12

Solve the proportion below:

• 42
• 6
• 2
• 28

You drive 25 miles in one hour. At this rate, how far will you drive in 3 hours?

Conduces 25 millas en una hora. A este ritmo, ¿hasta dónde conducirás en 3 horas?

• 25 miles

• 50 miles

• 125 miles

• 75 miles

To determine if ratios are equal...

• ask Ms. Luby cuz she's da GOAT

• get my phone out, look it up on Google, and hope Ms. Luby doesn't catch me

• flip a coin.

• check the cross products.

Do the ratios form a proportion?

 $\frac{3}{7}\ \ ,\ \ \frac{12}{21}$  

• You bet they do!

• Of course not!

Solve:   $\frac{4}{9}=\frac{10}{x}$  

•  $x=\frac{33}{8}$  

•  $x=\frac{45}{2}$  

•  $x=4$  

•  $x=\frac{3}{4}$  

Check ALL that set up the problem correctly:

Amanda read 18 pages in 23 minutes. How many pages will she read in 45 minutes?

• $\frac{18}{23}=\frac{x}{45}$

• $\frac{x}{45}=\frac{18}{23}$

• $\frac{23}{18}=\frac{45}{x}$

• $\frac{18}{45}=\frac{x}{23}$

A lawnmower factory can produce 12 lawnmowers in 8 hours. How many hours will it take to produce 30 lawnmowers?

Enter your answer as a number only (no units).