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Finding the Fourth Proportional to 180.44, 248.87 and 125.15

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Solution

The fourth proportional to 180.44, 248.87 and 125.15 is: 172.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.44 : 248.87 = 125.15 : x
  2. Step 2: Convert to fraction form
    180.44/248.87 = 125.15/x
  3. Step 3: Cross multiply
    180.44x = 248.87 × 125.15
  4. Step 4: Simplify right side
    180.44x = 31,146.08
  5. Step 5: Solve for x
    x = 31,146.08/180.44
  6. Step 6: Final answer
    x = 172.62

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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.