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Finding the Fourth Proportional to 377.98, 521.49 and 247.08

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Solution

The fourth proportional to 377.98, 521.49 and 247.08 is: 340.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    377.98 : 521.49 = 247.08 : x
  2. Step 2: Convert to fraction form
    377.98/521.49 = 247.08/x
  3. Step 3: Cross multiply
    377.98x = 521.49 × 247.08
  4. Step 4: Simplify right side
    377.98x = 128,847.14
  5. Step 5: Solve for x
    x = 128,847.14/377.98
  6. Step 6: Final answer
    x = 340.88

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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.