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Finding the Fourth Proportional to 397.88, 548.92 and 250.24

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Solution

The fourth proportional to 397.88, 548.92 and 250.24 is: 345.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.88 : 548.92 = 250.24 : x
  2. Step 2: Convert to fraction form
    397.88/548.92 = 250.24/x
  3. Step 3: Cross multiply
    397.88x = 548.92 × 250.24
  4. Step 4: Simplify right side
    397.88x = 137,361.74
  5. Step 5: Solve for x
    x = 137,361.74/397.88
  6. Step 6: Final answer
    x = 345.23

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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.