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Finding the Fourth Proportional to 461.92, 693.03 and 308.47

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Solution

The fourth proportional to 461.92, 693.03 and 308.47 is: 462.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    461.92 : 693.03 = 308.47 : x
  2. Step 2: Convert to fraction form
    461.92/693.03 = 308.47/x
  3. Step 3: Cross multiply
    461.92x = 693.03 × 308.47
  4. Step 4: Simplify right side
    461.92x = 213,778.96
  5. Step 5: Solve for x
    x = 213,778.96/461.92
  6. Step 6: Final answer
    x = 462.81

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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.