The researchers offered cats foods with various ratios of fat and protein flavored with fish, rabbit or orange. (petbusiness.com)
You may analyze various ratios as given in the above image and select the one which is the best for you. (relakhs.com)
However, in their anhydrous or pure forms, they can be mixed with gasoline (petrol) in various ratios for use in unmodified automobile engines. (sciencedaily.com)