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Finding the Third Proportional to 391 and 588

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Solution

The third proportional to 391 and 588 is: 884.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    391 : 588 = 588 : x
  2. Step 2: Convert to fraction form
    391/588 = 588/x
  3. Step 3: Cross multiply
    391x = 588 × 588
  4. Step 4: Simplify right side
    391x = 345,744
  5. Step 5: Solve for x
    x = 345,744/391
  6. Step 6: Final answer
    x = 884.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.