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Finding the Fourth Proportional to 447.42, 617.22 and 272.46

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Solution

The fourth proportional to 447.42, 617.22 and 272.46 is: 375.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    447.42 : 617.22 = 272.46 : x
  2. Step 2: Convert to fraction form
    447.42/617.22 = 272.46/x
  3. Step 3: Cross multiply
    447.42x = 617.22 × 272.46
  4. Step 4: Simplify right side
    447.42x = 168,167.76
  5. Step 5: Solve for x
    x = 168,167.76/447.42
  6. Step 6: Final answer
    x = 375.86

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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.