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Finding the Fourth Proportional to 1,067.49, 1,601.31 and 451.12

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Solution

The fourth proportional to 1,067.49, 1,601.31 and 451.12 is: 676.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,067.49 : 1,601.31 = 451.12 : x
  2. Step 2: Convert to fraction form
    1,067.49/1,601.31 = 451.12/x
  3. Step 3: Cross multiply
    1,067.49x = 1,601.31 × 451.12
  4. Step 4: Simplify right side
    1,067.49x = 722,372.71
  5. Step 5: Solve for x
    x = 722,372.71/1,067.49
  6. Step 6: Final answer
    x = 676.70

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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.