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Finding the Fourth Proportional to 667.48, 996.71 and 528.97

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Solution

The fourth proportional to 667.48, 996.71 and 528.97 is: 789.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    667.48 : 996.71 = 528.97 : x
  2. Step 2: Convert to fraction form
    667.48/996.71 = 528.97/x
  3. Step 3: Cross multiply
    667.48x = 996.71 × 528.97
  4. Step 4: Simplify right side
    667.48x = 527,229.69
  5. Step 5: Solve for x
    x = 527,229.69/667.48
  6. Step 6: Final answer
    x = 789.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.