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Finding the Fourth Proportional to 232.90, 347.89 and 231.82

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Solution

The fourth proportional to 232.90, 347.89 and 231.82 is: 346.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    232.90 : 347.89 = 231.82 : x
  2. Step 2: Convert to fraction form
    232.90/347.89 = 231.82/x
  3. Step 3: Cross multiply
    232.90x = 347.89 × 231.82
  4. Step 4: Simplify right side
    232.90x = 80,647.86
  5. Step 5: Solve for x
    x = 80,647.86/232.90
  6. Step 6: Final answer
    x = 346.28

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.