You will determine if two ratios form a proportion and solve for the unknown value of a proportion.
After completing this tutorial, you will be able to complete the following:
The quantities b and c are called the means, whereas the quantities a and d are called the extremes. Simple arithmetic yields the means-extremes, or cross-product, property of proportions.
The majority of proportional reasoning problems can be solved by using some variation of this property.
|Approximate Time||40 Minutes|
|Pre-requisite Concepts||Students should know how to apply the concept of division and evaluate expressions using operations with fractions.|
|Type of Tutorial||Concept Development|
|Key Vocabulary||cross-product, extremes switching property, means switching property|