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Finding the Fourth Proportional to 400.09, 552.15 and 234.31

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Solution

The fourth proportional to 400.09, 552.15 and 234.31 is: 323.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.09 : 552.15 = 234.31 : x
  2. Step 2: Convert to fraction form
    400.09/552.15 = 234.31/x
  3. Step 3: Cross multiply
    400.09x = 552.15 × 234.31
  4. Step 4: Simplify right side
    400.09x = 129,374.27
  5. Step 5: Solve for x
    x = 129,374.27/400.09
  6. Step 6: Final answer
    x = 323.36

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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.