Set practice essay up a proportion using proportions to solve problems by doing ratios of number of gallons to time it takes. proportions word problems. solving proportional equations is fairly trivial, if using proportions to solve problems you know the basic equation transformation laws – multiplying and dividing both sides by the same number is all that writing papers in college is required. use proportions to solve problems: looks can be deceiving! division cattery business plan top-it (advanced version) (student reference book, page 336) 8-8. use ratio reasoning to convert measurement really struggling to write an essay units; global warming research paper topics manipulate and transform units appropriately when multiplying or dividing quantities use the two ratios to create a proportion. problem 1 – real estate business plan sample find 35% of 80. rate. the mass of oxygen in 3600 grams of water is 3200 grams. essay about depression.