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Finding the Fourth Proportional to 170.76, 235.87 and 127.29

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Solution

The fourth proportional to 170.76, 235.87 and 127.29 is: 175.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.76 : 235.87 = 127.29 : x
  2. Step 2: Convert to fraction form
    170.76/235.87 = 127.29/x
  3. Step 3: Cross multiply
    170.76x = 235.87 × 127.29
  4. Step 4: Simplify right side
    170.76x = 30,023.57
  5. Step 5: Solve for x
    x = 30,023.57/170.76
  6. Step 6: Final answer
    x = 175.82

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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.