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Finding the Fourth Proportional to 400.00, 547.25 and 398.27

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Solution

The fourth proportional to 400.00, 547.25 and 398.27 is: 544.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.00 : 547.25 = 398.27 : x
  2. Step 2: Convert to fraction form
    400.00/547.25 = 398.27/x
  3. Step 3: Cross multiply
    400.00x = 547.25 × 398.27
  4. Step 4: Simplify right side
    400.00x = 217,950.68
  5. Step 5: Solve for x
    x = 217,950.68/400.00
  6. Step 6: Final answer
    x = 544.88

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.