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Finding the Fourth Proportional to 474.53, 709.97 and 439.97

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Solution

The fourth proportional to 474.53, 709.97 and 439.97 is: 658.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    474.53 : 709.97 = 439.97 : x
  2. Step 2: Convert to fraction form
    474.53/709.97 = 439.97/x
  3. Step 3: Cross multiply
    474.53x = 709.97 × 439.97
  4. Step 4: Simplify right side
    474.53x = 312,359.75
  5. Step 5: Solve for x
    x = 312,359.75/474.53
  6. Step 6: Final answer
    x = 658.26

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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.