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Finding the Fourth Proportional to 113.27, 170.69 and 93.43

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Solution

The fourth proportional to 113.27, 170.69 and 93.43 is: 140.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.27 : 170.69 = 93.43 : x
  2. Step 2: Convert to fraction form
    113.27/170.69 = 93.43/x
  3. Step 3: Cross multiply
    113.27x = 170.69 × 93.43
  4. Step 4: Simplify right side
    113.27x = 15,947.57
  5. Step 5: Solve for x
    x = 15,947.57/113.27
  6. Step 6: Final answer
    x = 140.79

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.