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Finding the Fourth Proportional to 162.71, 224.17 and 127.85

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Solution

The fourth proportional to 162.71, 224.17 and 127.85 is: 176.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    162.71 : 224.17 = 127.85 : x
  2. Step 2: Convert to fraction form
    162.71/224.17 = 127.85/x
  3. Step 3: Cross multiply
    162.71x = 224.17 × 127.85
  4. Step 4: Simplify right side
    162.71x = 28,658.69
  5. Step 5: Solve for x
    x = 28,658.69/162.71
  6. Step 6: Final answer
    x = 176.13

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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.