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Finding the Fourth Proportional to 531.38, 733.31 and 298.50

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Solution

The fourth proportional to 531.38, 733.31 and 298.50 is: 411.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.38 : 733.31 = 298.50 : x
  2. Step 2: Convert to fraction form
    531.38/733.31 = 298.50/x
  3. Step 3: Cross multiply
    531.38x = 733.31 × 298.50
  4. Step 4: Simplify right side
    531.38x = 218,891.54
  5. Step 5: Solve for x
    x = 218,891.54/531.38
  6. Step 6: Final answer
    x = 411.93

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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.