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Finding the Fourth Proportional to 400.66, 553.10 and 234.82

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Solution

The fourth proportional to 400.66, 553.10 and 234.82 is: 324.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.66 : 553.10 = 234.82 : x
  2. Step 2: Convert to fraction form
    400.66/553.10 = 234.82/x
  3. Step 3: Cross multiply
    400.66x = 553.10 × 234.82
  4. Step 4: Simplify right side
    400.66x = 129,878.94
  5. Step 5: Solve for x
    x = 129,878.94/400.66
  6. Step 6: Final answer
    x = 324.16

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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.