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Finding the Fourth Proportional to 115.50, 158.69 and 94.72

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Solution

The fourth proportional to 115.50, 158.69 and 94.72 is: 130.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.50 : 158.69 = 94.72 : x
  2. Step 2: Convert to fraction form
    115.50/158.69 = 94.72/x
  3. Step 3: Cross multiply
    115.50x = 158.69 × 94.72
  4. Step 4: Simplify right side
    115.50x = 15,031.12
  5. Step 5: Solve for x
    x = 15,031.12/115.50
  6. Step 6: Final answer
    x = 130.14

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.