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Finding the Fourth Proportional to 537.91, 742.13 and 316.71

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Solution

The fourth proportional to 537.91, 742.13 and 316.71 is: 436.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.91 : 742.13 = 316.71 : x
  2. Step 2: Convert to fraction form
    537.91/742.13 = 316.71/x
  3. Step 3: Cross multiply
    537.91x = 742.13 × 316.71
  4. Step 4: Simplify right side
    537.91x = 235,039.60
  5. Step 5: Solve for x
    x = 235,039.60/537.91
  6. Step 6: Final answer
    x = 436.95

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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.