Share this 16 Mark Proportions Google Doc Quiz with your class. It has three sections: Finding proportion of ratios using means by extremes; Finding proportion of ratios using fractions and cross-multiplication, and a section on simplifying proportional ratios. An answer key is provided. This can be purchased as part of a bundle which also includes an Instructional Google Slides Presentation and a Google Doc Worksheet with an answer key. Access this Google Product by clicking on the link provided.