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Finding the Fourth Proportional to 397.49, 548.87 and 250.38

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Solution

The fourth proportional to 397.49, 548.87 and 250.38 is: 345.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    397.49 : 548.87 = 250.38 : x
  2. Step 2: Convert to fraction form
    397.49/548.87 = 250.38/x
  3. Step 3: Cross multiply
    397.49x = 548.87 × 250.38
  4. Step 4: Simplify right side
    397.49x = 137,424.82
  5. Step 5: Solve for x
    x = 137,424.82/397.49
  6. Step 6: Final answer
    x = 345.74

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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.