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Finding the Fourth Proportional to 537.73, 742.68 and 391.02

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Solution

The fourth proportional to 537.73, 742.68 and 391.02 is: 540.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.73 : 742.68 = 391.02 : x
  2. Step 2: Convert to fraction form
    537.73/742.68 = 391.02/x
  3. Step 3: Cross multiply
    537.73x = 742.68 × 391.02
  4. Step 4: Simplify right side
    537.73x = 290,402.73
  5. Step 5: Solve for x
    x = 290,402.73/537.73
  6. Step 6: Final answer
    x = 540.05

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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.