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Finding the Fourth Proportional to 531.09, 733.19 and 356.54

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Solution

The fourth proportional to 531.09, 733.19 and 356.54 is: 492.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    531.09 : 733.19 = 356.54 : x
  2. Step 2: Convert to fraction form
    531.09/733.19 = 356.54/x
  3. Step 3: Cross multiply
    531.09x = 733.19 × 356.54
  4. Step 4: Simplify right side
    531.09x = 261,406.11
  5. Step 5: Solve for x
    x = 261,406.11/531.09
  6. Step 6: Final answer
    x = 492.21

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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.