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Finding the Fourth Proportional to 451.22, 672.31 and 402.71

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Solution

The fourth proportional to 451.22, 672.31 and 402.71 is: 600.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.22 : 672.31 = 402.71 : x
  2. Step 2: Convert to fraction form
    451.22/672.31 = 402.71/x
  3. Step 3: Cross multiply
    451.22x = 672.31 × 402.71
  4. Step 4: Simplify right side
    451.22x = 270,745.96
  5. Step 5: Solve for x
    x = 270,745.96/451.22
  6. Step 6: Final answer
    x = 600.03

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.