Proportions

The 5 videos below are more basic, and suitable for students who have never worked with Proportions. This would be for Prealgebra.

The raw video files are labeled basicprop10.mp4, etc.

Basic Proportions 1: Basic Introduction to proportions

Basic Proportions 2: Solving basic proportions.

Basic Proportions 3: Using a calculator to round answer to the nearest hundredth.

Basic Proportions 4: Solving Proportions containing decimals using a calculator to round.

Basic Proportions 5: Solving proportions containing complex fractions:

The 4 videos below are slightly more complicated, but may be done in Prealgebra or Beginning Algebra.

Solving Proportions Part 1

Solving Proportions Part 2

Solving Word Problems using Proportions Part 1

Solving Word Problems using Proportions Part 2

The videos below show how to solve percent equations using proportions.

Solving Percent Equations using Proportions 1: http://youtu.be/T8dAK1RDexI

Solving Percent Equations using Proportions 2: http://youtu.be/vuSMdL0Mke4