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Finding the Fourth Proportional to 174.31, 240.76 and 127.61

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Solution

The fourth proportional to 174.31, 240.76 and 127.61 is: 176.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    174.31 : 240.76 = 127.61 : x
  2. Step 2: Convert to fraction form
    174.31/240.76 = 127.61/x
  3. Step 3: Cross multiply
    174.31x = 240.76 × 127.61
  4. Step 4: Simplify right side
    174.31x = 30,723.24
  5. Step 5: Solve for x
    x = 30,723.24/174.31
  6. Step 6: Final answer
    x = 176.26

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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.