Solving Word Problems using Proportions 2

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
8945 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Description:

Shows how to solve word problems by writing a proportion and solving.

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Questions answered by this video:
  • How do you solve word problems using proportions?
  • How can you check the solution to a word problem to see if it is reasonable?
  • If on a map, two cities are 2 5/8 inches apart, and 3/8 inches on the map represents 25 miles, how far apart are the cities (in miles)?
  • How can you determine how far apart cities are by using the scale?
  • How can you use a map scale to find distance?
  • How do you solve the proportion (3/8)/25 = (2 5/8)/m?
  • What are similar triangles?
  • How can you use proportions to find a missing length of a triangle that is similar to another triangle?
  • If you have two similiar triangles and you are missing a length of one triangle, how do you find the missing length using proportions?
  • How do you solve the proportion 12/5 = x/6?
  • How do you solve the proportion 5/x = 4/6?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson goes through a very common and useful word problem that uses proportions to solve. All steps for finding the solution to the problem are shown and explained. Also, a problem dealing with similar triangles is shown. This is a great video for learning how to write and solve proportions from very common Algebra scenarios.