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Finding the Fourth Proportional to 399.92, 552.18 and 250.59

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Solution

The fourth proportional to 399.92, 552.18 and 250.59 is: 346.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    399.92 : 552.18 = 250.59 : x
  2. Step 2: Convert to fraction form
    399.92/552.18 = 250.59/x
  3. Step 3: Cross multiply
    399.92x = 552.18 × 250.59
  4. Step 4: Simplify right side
    399.92x = 138,372.74
  5. Step 5: Solve for x
    x = 138,372.74/399.92
  6. Step 6: Final answer
    x = 346.00

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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.