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Finding the Fourth Proportional to 115.56, 159.55 and 82.44

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Solution

The fourth proportional to 115.56, 159.55 and 82.44 is: 113.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.56 : 159.55 = 82.44 : x
  2. Step 2: Convert to fraction form
    115.56/159.55 = 82.44/x
  3. Step 3: Cross multiply
    115.56x = 159.55 × 82.44
  4. Step 4: Simplify right side
    115.56x = 13,154.00
  5. Step 5: Solve for x
    x = 13,154.00/115.56
  6. Step 6: Final answer
    x = 113.82

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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.