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Finding the Fourth Proportional to 381.99, 527.19 and 234.66

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Solution

The fourth proportional to 381.99, 527.19 and 234.66 is: 323.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    381.99 : 527.19 = 234.66 : x
  2. Step 2: Convert to fraction form
    381.99/527.19 = 234.66/x
  3. Step 3: Cross multiply
    381.99x = 527.19 × 234.66
  4. Step 4: Simplify right side
    381.99x = 123,710.41
  5. Step 5: Solve for x
    x = 123,710.41/381.99
  6. Step 6: Final answer
    x = 323.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.