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Finding the Fourth Proportional to 224.96, 310.51 and 126.78

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Solution

The fourth proportional to 224.96, 310.51 and 126.78 is: 174.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.96 : 310.51 = 126.78 : x
  2. Step 2: Convert to fraction form
    224.96/310.51 = 126.78/x
  3. Step 3: Cross multiply
    224.96x = 310.51 × 126.78
  4. Step 4: Simplify right side
    224.96x = 39,365.53
  5. Step 5: Solve for x
    x = 39,365.53/224.96
  6. Step 6: Final answer
    x = 174.99

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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.