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Finding the Fourth Proportional to 400.10, 552.18 and 223.09

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Solution

The fourth proportional to 400.10, 552.18 and 223.09 is: 307.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.10 : 552.18 = 223.09 : x
  2. Step 2: Convert to fraction form
    400.10/552.18 = 223.09/x
  3. Step 3: Cross multiply
    400.10x = 552.18 × 223.09
  4. Step 4: Simplify right side
    400.10x = 123,183.19
  5. Step 5: Solve for x
    x = 123,183.19/400.10
  6. Step 6: Final answer
    x = 307.88

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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.