Use this page to practice the rule of three quickly. Each question gives you three values \((a, b, c)\) and you solve for \(x\).
Pick a mode (direct/inverse/mixed), choose difficulty, and generate a new set anytime.
Quiz settings
Best score: —
Generate a quiz for direct, inverse, or mixed proportions — with instant checking and steps.
Use this page to practice the rule of three quickly. Each question gives you three values \((a, b, c)\) and you solve for \(x\).
Pick a mode (direct/inverse/mixed), choose difficulty, and generate a new set anytime.
Best score: —