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Finding the Fourth Proportional to 1,067.61, 1,473.07 and 674.41

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Solution

The fourth proportional to 1,067.61, 1,473.07 and 674.41 is: 930.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,067.61 : 1,473.07 = 674.41 : x
  2. Step 2: Convert to fraction form
    1,067.61/1,473.07 = 674.41/x
  3. Step 3: Cross multiply
    1,067.61x = 1,473.07 × 674.41
  4. Step 4: Simplify right side
    1,067.61x = 993,453.14
  5. Step 5: Solve for x
    x = 993,453.14/1,067.61
  6. Step 6: Final answer
    x = 930.54

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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.