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Finding the Fourth Proportional to 658.87, 987.49 and 334.33

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Solution

The fourth proportional to 658.87, 987.49 and 334.33 is: 501.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.87 : 987.49 = 334.33 : x
  2. Step 2: Convert to fraction form
    658.87/987.49 = 334.33/x
  3. Step 3: Cross multiply
    658.87x = 987.49 × 334.33
  4. Step 4: Simplify right side
    658.87x = 330,147.53
  5. Step 5: Solve for x
    x = 330,147.53/658.87
  6. Step 6: Final answer
    x = 501.08

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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.