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Finding the Fourth Proportional to 252.88, 377.27 and 239.20

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Solution

The fourth proportional to 252.88, 377.27 and 239.20 is: 356.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    252.88 : 377.27 = 239.20 : x
  2. Step 2: Convert to fraction form
    252.88/377.27 = 239.20/x
  3. Step 3: Cross multiply
    252.88x = 377.27 × 239.20
  4. Step 4: Simplify right side
    252.88x = 90,242.98
  5. Step 5: Solve for x
    x = 90,242.98/252.88
  6. Step 6: Final answer
    x = 356.86

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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.