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Finding the Fourth Proportional to 224.95, 310.42 and 126.71

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Solution

The fourth proportional to 224.95, 310.42 and 126.71 is: 174.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.95 : 310.42 = 126.71 : x
  2. Step 2: Convert to fraction form
    224.95/310.42 = 126.71/x
  3. Step 3: Cross multiply
    224.95x = 310.42 × 126.71
  4. Step 4: Simplify right side
    224.95x = 39,333.32
  5. Step 5: Solve for x
    x = 39,333.32/224.95
  6. Step 6: Final answer
    x = 174.85

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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.