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Finding the Fourth Proportional to 671.01, 1,008.05 and 397.29

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Solution

The fourth proportional to 671.01, 1,008.05 and 397.29 is: 596.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    671.01 : 1,008.05 = 397.29 : x
  2. Step 2: Convert to fraction form
    671.01/1,008.05 = 397.29/x
  3. Step 3: Cross multiply
    671.01x = 1,008.05 × 397.29
  4. Step 4: Simplify right side
    671.01x = 400,488.18
  5. Step 5: Solve for x
    x = 400,488.18/671.01
  6. Step 6: Final answer
    x = 596.84

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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.