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Finding the Fourth Proportional to 527.15, 726.67 and 379.73

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Solution

The fourth proportional to 527.15, 726.67 and 379.73 is: 523.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    527.15 : 726.67 = 379.73 : x
  2. Step 2: Convert to fraction form
    527.15/726.67 = 379.73/x
  3. Step 3: Cross multiply
    527.15x = 726.67 × 379.73
  4. Step 4: Simplify right side
    527.15x = 275,940.69
  5. Step 5: Solve for x
    x = 275,940.69/527.15
  6. Step 6: Final answer
    x = 523.46

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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.