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Finding the Fourth Proportional to 115.88, 173.91 and 58.09

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Solution

The fourth proportional to 115.88, 173.91 and 58.09 is: 87.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    115.88 : 173.91 = 58.09 : x
  2. Step 2: Convert to fraction form
    115.88/173.91 = 58.09/x
  3. Step 3: Cross multiply
    115.88x = 173.91 × 58.09
  4. Step 4: Simplify right side
    115.88x = 10,102.14
  5. Step 5: Solve for x
    x = 10,102.14/115.88
  6. Step 6: Final answer
    x = 87.18

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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.