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Finding the Fourth Proportional to 224.74, 310.18 and 126.54

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Solution

The fourth proportional to 224.74, 310.18 and 126.54 is: 174.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.74 : 310.18 = 126.54 : x
  2. Step 2: Convert to fraction form
    224.74/310.18 = 126.54/x
  3. Step 3: Cross multiply
    224.74x = 310.18 × 126.54
  4. Step 4: Simplify right side
    224.74x = 39,250.18
  5. Step 5: Solve for x
    x = 39,250.18/224.74
  6. Step 6: Final answer
    x = 174.65

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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.