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Finding the Fourth Proportional to 247.29, 370.82 and 82.76

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Solution

The fourth proportional to 247.29, 370.82 and 82.76 is: 124.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.29 : 370.82 = 82.76 : x
  2. Step 2: Convert to fraction form
    247.29/370.82 = 82.76/x
  3. Step 3: Cross multiply
    247.29x = 370.82 × 82.76
  4. Step 4: Simplify right side
    247.29x = 30,687.42
  5. Step 5: Solve for x
    x = 30,687.42/247.29
  6. Step 6: Final answer
    x = 124.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.