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Finding the Fourth Proportional to 501.38, 750.30 and 439.52

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Solution

The fourth proportional to 501.38, 750.30 and 439.52 is: 657.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    501.38 : 750.30 = 439.52 : x
  2. Step 2: Convert to fraction form
    501.38/750.30 = 439.52/x
  3. Step 3: Cross multiply
    501.38x = 750.30 × 439.52
  4. Step 4: Simplify right side
    501.38x = 329,766.46
  5. Step 5: Solve for x
    x = 329,766.46/501.38
  6. Step 6: Final answer
    x = 657.72

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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.