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Finding the Fourth Proportional to 115.06, 158.53 and 88.83

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Solution

The fourth proportional to 115.06, 158.53 and 88.83 is: 122.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.06 : 158.53 = 88.83 : x
  2. Step 2: Convert to fraction form
    115.06/158.53 = 88.83/x
  3. Step 3: Cross multiply
    115.06x = 158.53 × 88.83
  4. Step 4: Simplify right side
    115.06x = 14,082.62
  5. Step 5: Solve for x
    x = 14,082.62/115.06
  6. Step 6: Final answer
    x = 122.40

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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.