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Finding the Fourth Proportional to 576.11, 793.88 and 401.15

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Solution

The fourth proportional to 576.11, 793.88 and 401.15 is: 552.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    576.11 : 793.88 = 401.15 : x
  2. Step 2: Convert to fraction form
    576.11/793.88 = 401.15/x
  3. Step 3: Cross multiply
    576.11x = 793.88 × 401.15
  4. Step 4: Simplify right side
    576.11x = 318,464.96
  5. Step 5: Solve for x
    x = 318,464.96/576.11
  6. Step 6: Final answer
    x = 552.78

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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.