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Finding the Fourth Proportional to 617.91, 927.11 and 271.05

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Solution

The fourth proportional to 617.91, 927.11 and 271.05 is: 406.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.91 : 927.11 = 271.05 : x
  2. Step 2: Convert to fraction form
    617.91/927.11 = 271.05/x
  3. Step 3: Cross multiply
    617.91x = 927.11 × 271.05
  4. Step 4: Simplify right side
    617.91x = 251,291.81
  5. Step 5: Solve for x
    x = 251,291.81/617.91
  6. Step 6: Final answer
    x = 406.68

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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.