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Finding the Fourth Proportional to 400.29, 549.08 and 396.83

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Solution

The fourth proportional to 400.29, 549.08 and 396.83 is: 544.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.29 : 549.08 = 396.83 : x
  2. Step 2: Convert to fraction form
    400.29/549.08 = 396.83/x
  3. Step 3: Cross multiply
    400.29x = 549.08 × 396.83
  4. Step 4: Simplify right side
    400.29x = 217,891.42
  5. Step 5: Solve for x
    x = 217,891.42/400.29
  6. Step 6: Final answer
    x = 544.33

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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.