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Finding the Fourth Proportional to 528.34, 729.35 and 331.97

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Solution

The fourth proportional to 528.34, 729.35 and 331.97 is: 458.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    528.34 : 729.35 = 331.97 : x
  2. Step 2: Convert to fraction form
    528.34/729.35 = 331.97/x
  3. Step 3: Cross multiply
    528.34x = 729.35 × 331.97
  4. Step 4: Simplify right side
    528.34x = 242,122.32
  5. Step 5: Solve for x
    x = 242,122.32/528.34
  6. Step 6: Final answer
    x = 458.27

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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.