The best replacement for proportions is percentages.

The best alternatives to proportions are rated as following:
★★★★★  percentages
★★★★  means
★★  portions
★  rates
★  law of definite proportions
★  law of multiple proportions
★  more than 2 proportions
★  frequencies
★  ratios
  non proportions
  comparing two proportions
  proust's law
  law of constant composition

Your alternative for proportions is not listed? Suggest!
Speaking about proportions, one probably shouldn't forget about percents.

Other search terms related to proportions and their ratings are:
★★★★★ percents
★ word problems
★ similar figures worksheet
similar figures
cross multiplication
You have in mind a companion for proportions and it is not yet here? Propose!



Google Trends

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proportions
percentages
means