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Finding the Fourth Proportional to 276.85, 379.90 and 252.19

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Solution

The fourth proportional to 276.85, 379.90 and 252.19 is: 346.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    276.85 : 379.90 = 252.19 : x
  2. Step 2: Convert to fraction form
    276.85/379.90 = 252.19/x
  3. Step 3: Cross multiply
    276.85x = 379.90 × 252.19
  4. Step 4: Simplify right side
    276.85x = 95,806.98
  5. Step 5: Solve for x
    x = 95,806.98/276.85
  6. Step 6: Final answer
    x = 346.06

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.