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Finding the Fourth Proportional to 679.68, 938.25 and 532.89

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Solution

The fourth proportional to 679.68, 938.25 and 532.89 is: 735.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    679.68 : 938.25 = 532.89 : x
  2. Step 2: Convert to fraction form
    679.68/938.25 = 532.89/x
  3. Step 3: Cross multiply
    679.68x = 938.25 × 532.89
  4. Step 4: Simplify right side
    679.68x = 499,984.04
  5. Step 5: Solve for x
    x = 499,984.04/679.68
  6. Step 6: Final answer
    x = 735.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.