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Finding the Fourth Proportional to 115.09, 173.34 and 88.22

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Solution

The fourth proportional to 115.09, 173.34 and 88.22 is: 132.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.09 : 173.34 = 88.22 : x
  2. Step 2: Convert to fraction form
    115.09/173.34 = 88.22/x
  3. Step 3: Cross multiply
    115.09x = 173.34 × 88.22
  4. Step 4: Simplify right side
    115.09x = 15,292.05
  5. Step 5: Solve for x
    x = 15,292.05/115.09
  6. Step 6: Final answer
    x = 132.87

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.