This page teaches all you need to know about 2-step proportions.
Instructions:
Watch each video and then use the Example Sheet as a model to help you do the practice exercises that go with that video on the Exercise sheet. Correct your own work with the Answer Sheet. Then move on to the next video.
1st Video: Proportion Followed by Ratio - Example 1:
2nd Video: Proportion Followed by Ratio - Example 2: