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Finding the Fourth Proportional to 658.25, 987.91 and 333.71

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Solution

The fourth proportional to 658.25, 987.91 and 333.71 is: 500.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.25 : 987.91 = 333.71 : x
  2. Step 2: Convert to fraction form
    658.25/987.91 = 333.71/x
  3. Step 3: Cross multiply
    658.25x = 987.91 × 333.71
  4. Step 4: Simplify right side
    658.25x = 329,675.45
  5. Step 5: Solve for x
    x = 329,675.45/658.25
  6. Step 6: Final answer
    x = 500.84

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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.