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Finding the Fourth Proportional to 180.65, 249.17 and 125.34

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Solution

The fourth proportional to 180.65, 249.17 and 125.34 is: 172.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.65 : 249.17 = 125.34 : x
  2. Step 2: Convert to fraction form
    180.65/249.17 = 125.34/x
  3. Step 3: Cross multiply
    180.65x = 249.17 × 125.34
  4. Step 4: Simplify right side
    180.65x = 31,230.34
  5. Step 5: Solve for x
    x = 31,230.34/180.65
  6. Step 6: Final answer
    x = 172.88

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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.