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Finding the Fourth Proportional to 230.31, 344.79 and 148.91

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Solution

The fourth proportional to 230.31, 344.79 and 148.91 is: 222.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.31 : 344.79 = 148.91 : x
  2. Step 2: Convert to fraction form
    230.31/344.79 = 148.91/x
  3. Step 3: Cross multiply
    230.31x = 344.79 × 148.91
  4. Step 4: Simplify right side
    230.31x = 51,340.95
  5. Step 5: Solve for x
    x = 51,340.95/230.31
  6. Step 6: Final answer
    x = 222.92

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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.