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Finding the Fourth Proportional to 115.68, 173.18 and 108.08

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Solution

The fourth proportional to 115.68, 173.18 and 108.08 is: 161.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.68 : 173.18 = 108.08 : x
  2. Step 2: Convert to fraction form
    115.68/173.18 = 108.08/x
  3. Step 3: Cross multiply
    115.68x = 173.18 × 108.08
  4. Step 4: Simplify right side
    115.68x = 18,717.29
  5. Step 5: Solve for x
    x = 18,717.29/115.68
  6. Step 6: Final answer
    x = 161.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.