Home / 1,372.25-2,058.71-447.85

Finding the Fourth Proportional to 1,372.25, 2,058.71 and 447.85

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Solution

The fourth proportional to 1,372.25, 2,058.71 and 447.85 is: 671.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,372.25 : 2,058.71 = 447.85 : x
  2. Step 2: Convert to fraction form
    1,372.25/2,058.71 = 447.85/x
  3. Step 3: Cross multiply
    1,372.25x = 2,058.71 × 447.85
  4. Step 4: Simplify right side
    1,372.25x = 921,993.27
  5. Step 5: Solve for x
    x = 921,993.27/1,372.25
  6. Step 6: Final answer
    x = 671.88

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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.