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Finding the Fourth Proportional to 531.10, 733.20 and 356.74

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Solution

The fourth proportional to 531.10, 733.20 and 356.74 is: 492.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.10 : 733.20 = 356.74 : x
  2. Step 2: Convert to fraction form
    531.10/733.20 = 356.74/x
  3. Step 3: Cross multiply
    531.10x = 733.20 × 356.74
  4. Step 4: Simplify right side
    531.10x = 261,561.77
  5. Step 5: Solve for x
    x = 261,561.77/531.10
  6. Step 6: Final answer
    x = 492.49

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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.