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Finding the Fourth Proportional to 180.52, 248.80 and 127.96

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Solution

The fourth proportional to 180.52, 248.80 and 127.96 is: 176.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.52 : 248.80 = 127.96 : x
  2. Step 2: Convert to fraction form
    180.52/248.80 = 127.96/x
  3. Step 3: Cross multiply
    180.52x = 248.80 × 127.96
  4. Step 4: Simplify right side
    180.52x = 31,836.45
  5. Step 5: Solve for x
    x = 31,836.45/180.52
  6. Step 6: Final answer
    x = 176.36

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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.