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Finding the Fourth Proportional to 658.24, 987.68 and 514.24

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Solution

The fourth proportional to 658.24, 987.68 and 514.24 is: 771.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    658.24 : 987.68 = 514.24 : x
  2. Step 2: Convert to fraction form
    658.24/987.68 = 514.24/x
  3. Step 3: Cross multiply
    658.24x = 987.68 × 514.24
  4. Step 4: Simplify right side
    658.24x = 507,904.56
  5. Step 5: Solve for x
    x = 507,904.56/658.24
  6. Step 6: Final answer
    x = 771.61

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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.