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Finding the Fourth Proportional to 447.17, 616.77 and 272.52

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Solution

The fourth proportional to 447.17, 616.77 and 272.52 is: 375.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.17 : 616.77 = 272.52 : x
  2. Step 2: Convert to fraction form
    447.17/616.77 = 272.52/x
  3. Step 3: Cross multiply
    447.17x = 616.77 × 272.52
  4. Step 4: Simplify right side
    447.17x = 168,082.16
  5. Step 5: Solve for x
    x = 168,082.16/447.17
  6. Step 6: Final answer
    x = 375.88

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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.