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Finding the Fourth Proportional to 180.40, 248.88 and 114.97

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Solution

The fourth proportional to 180.40, 248.88 and 114.97 is: 158.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.40 : 248.88 = 114.97 : x
  2. Step 2: Convert to fraction form
    180.40/248.88 = 114.97/x
  3. Step 3: Cross multiply
    180.40x = 248.88 × 114.97
  4. Step 4: Simplify right side
    180.40x = 28,613.73
  5. Step 5: Solve for x
    x = 28,613.73/180.40
  6. Step 6: Final answer
    x = 158.61

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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.