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Finding the Fourth Proportional to 400.22, 599.99 and 169.28

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Solution

The fourth proportional to 400.22, 599.99 and 169.28 is: 253.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    400.22 : 599.99 = 169.28 : x
  2. Step 2: Convert to fraction form
    400.22/599.99 = 169.28/x
  3. Step 3: Cross multiply
    400.22x = 599.99 × 169.28
  4. Step 4: Simplify right side
    400.22x = 101,568.23
  5. Step 5: Solve for x
    x = 101,568.23/400.22
  6. Step 6: Final answer
    x = 253.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.