ratio: A comparison of two quantities that both have the same unit of measure.
rate: Compares two quantities that both have different units
12 km per hour
proportion: A relationship clarifying that two ratios or rates are the same
1. 5 hours to travel 360 kilometers is about km/h.
2. Emma saves 28 cents of every dollar that she earns. Emma earned $75 last week. How much money did Emma save last week?
Here are 3 ways you can prove 3/4 = 12/16