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Finding the Fourth Proportional to 230.38, 346.05 and 143.82

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Solution

The fourth proportional to 230.38, 346.05 and 143.82 is: 216.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    230.38 : 346.05 = 143.82 : x
  2. Step 2: Convert to fraction form
    230.38/346.05 = 143.82/x
  3. Step 3: Cross multiply
    230.38x = 346.05 × 143.82
  4. Step 4: Simplify right side
    230.38x = 49,768.91
  5. Step 5: Solve for x
    x = 49,768.91/230.38
  6. Step 6: Final answer
    x = 216.03

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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.