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Finding the Fourth Proportional to 531.53, 732.35 and 356.57

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Solution

The fourth proportional to 531.53, 732.35 and 356.57 is: 491.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.53 : 732.35 = 356.57 : x
  2. Step 2: Convert to fraction form
    531.53/732.35 = 356.57/x
  3. Step 3: Cross multiply
    531.53x = 732.35 × 356.57
  4. Step 4: Simplify right side
    531.53x = 261,128.59
  5. Step 5: Solve for x
    x = 261,128.59/531.53
  6. Step 6: Final answer
    x = 491.28

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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.