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Finding the Fourth Proportional to 528.48, 731.16 and 462.96

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Solution

The fourth proportional to 528.48, 731.16 and 462.96 is: 640.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.48 : 731.16 = 462.96 : x
  2. Step 2: Convert to fraction form
    528.48/731.16 = 462.96/x
  3. Step 3: Cross multiply
    528.48x = 731.16 × 462.96
  4. Step 4: Simplify right side
    528.48x = 338,497.83
  5. Step 5: Solve for x
    x = 338,497.83/528.48
  6. Step 6: Final answer
    x = 640.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.