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Finding the Fourth Proportional to 170.97, 235.97 and 97.31

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Solution

The fourth proportional to 170.97, 235.97 and 97.31 is: 134.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    170.97 : 235.97 = 97.31 : x
  2. Step 2: Convert to fraction form
    170.97/235.97 = 97.31/x
  3. Step 3: Cross multiply
    170.97x = 235.97 × 97.31
  4. Step 4: Simplify right side
    170.97x = 22,960.57
  5. Step 5: Solve for x
    x = 22,960.57/170.97
  6. Step 6: Final answer
    x = 134.30

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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.