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Finding the Fourth Proportional to 394.56, 547.26 and 379.98

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Solution

The fourth proportional to 394.56, 547.26 and 379.98 is: 527.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    394.56 : 547.26 = 379.98 : x
  2. Step 2: Convert to fraction form
    394.56/547.26 = 379.98/x
  3. Step 3: Cross multiply
    394.56x = 547.26 × 379.98
  4. Step 4: Simplify right side
    394.56x = 207,947.85
  5. Step 5: Solve for x
    x = 207,947.85/394.56
  6. Step 6: Final answer
    x = 527.04

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.