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Finding the Fourth Proportional to 658.92, 987.90 and 334.12

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Solution

The fourth proportional to 658.92, 987.90 and 334.12 is: 500.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.92 : 987.90 = 334.12 : x
  2. Step 2: Convert to fraction form
    658.92/987.90 = 334.12/x
  3. Step 3: Cross multiply
    658.92x = 987.90 × 334.12
  4. Step 4: Simplify right side
    658.92x = 330,077.15
  5. Step 5: Solve for x
    x = 330,077.15/658.92
  6. Step 6: Final answer
    x = 500.94

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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.