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Finding the Fourth Proportional to 224.20, 309.35 and 125.92

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Solution

The fourth proportional to 224.20, 309.35 and 125.92 is: 173.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.20 : 309.35 = 125.92 : x
  2. Step 2: Convert to fraction form
    224.20/309.35 = 125.92/x
  3. Step 3: Cross multiply
    224.20x = 309.35 × 125.92
  4. Step 4: Simplify right side
    224.20x = 38,953.35
  5. Step 5: Solve for x
    x = 38,953.35/224.20
  6. Step 6: Final answer
    x = 173.74

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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.