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Finding the Fourth Proportional to 115.11, 158.90 and 95.27

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Solution

The fourth proportional to 115.11, 158.90 and 95.27 is: 131.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.11 : 158.90 = 95.27 : x
  2. Step 2: Convert to fraction form
    115.11/158.90 = 95.27/x
  3. Step 3: Cross multiply
    115.11x = 158.90 × 95.27
  4. Step 4: Simplify right side
    115.11x = 15,137.13
  5. Step 5: Solve for x
    x = 15,137.13/115.11
  6. Step 6: Final answer
    x = 131.50

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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.