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Finding the Fourth Proportional to 247.47, 372.53 and 225.15

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Solution

The fourth proportional to 247.47, 372.53 and 225.15 is: 338.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    247.47 : 372.53 = 225.15 : x
  2. Step 2: Convert to fraction form
    247.47/372.53 = 225.15/x
  3. Step 3: Cross multiply
    247.47x = 372.53 × 225.15
  4. Step 4: Simplify right side
    247.47x = 83,874.00
  5. Step 5: Solve for x
    x = 83,874.00/247.47
  6. Step 6: Final answer
    x = 338.93

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.