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Finding the Fourth Proportional to 398.01, 548.97 and 240.51

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Solution

The fourth proportional to 398.01, 548.97 and 240.51 is: 331.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    398.01 : 548.97 = 240.51 : x
  2. Step 2: Convert to fraction form
    398.01/548.97 = 240.51/x
  3. Step 3: Cross multiply
    398.01x = 548.97 × 240.51
  4. Step 4: Simplify right side
    398.01x = 132,032.77
  5. Step 5: Solve for x
    x = 132,032.77/398.01
  6. Step 6: Final answer
    x = 331.73

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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.