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Finding the Fourth Proportional to 230.88, 346.40 and 115.37

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Solution

The fourth proportional to 230.88, 346.40 and 115.37 is: 173.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.88 : 346.40 = 115.37 : x
  2. Step 2: Convert to fraction form
    230.88/346.40 = 115.37/x
  3. Step 3: Cross multiply
    230.88x = 346.40 × 115.37
  4. Step 4: Simplify right side
    230.88x = 39,961.86
  5. Step 5: Solve for x
    x = 39,961.86/230.88
  6. Step 6: Final answer
    x = 173.08

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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.