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Finding the Fourth Proportional to 537.80, 742.32 and 316.82

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Solution

The fourth proportional to 537.80, 742.32 and 316.82 is: 437.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    537.80 : 742.32 = 316.82 : x
  2. Step 2: Convert to fraction form
    537.80/742.32 = 316.82/x
  3. Step 3: Cross multiply
    537.80x = 742.32 × 316.82
  4. Step 4: Simplify right side
    537.80x = 235,178.11
  5. Step 5: Solve for x
    x = 235,178.11/537.80
  6. Step 6: Final answer
    x = 437.30

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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.