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Finding the Fourth Proportional to 224.27, 309.45 and 131

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Solution

The fourth proportional to 224.27, 309.45 and 131 is: 180.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    224.27 : 309.45 = 131 : x
  2. Step 2: Convert to fraction form
    224.27/309.45 = 131/x
  3. Step 3: Cross multiply
    224.27x = 309.45 × 131
  4. Step 4: Simplify right side
    224.27x = 40,537.95
  5. Step 5: Solve for x
    x = 40,537.95/224.27
  6. Step 6: Final answer
    x = 180.76

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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.