Home / 1,067.20-1,600.80-1,020.73

Finding the Fourth Proportional to 1,067.20, 1,600.80 and 1,020.73

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Solution

The fourth proportional to 1,067.20, 1,600.80 and 1,020.73 is: 1,531.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,067.20 : 1,600.80 = 1,020.73 : x
  2. Step 2: Convert to fraction form
    1,067.20/1,600.80 = 1,020.73/x
  3. Step 3: Cross multiply
    1,067.20x = 1,600.80 × 1,020.73
  4. Step 4: Simplify right side
    1,067.20x = 1,633,984.58
  5. Step 5: Solve for x
    x = 1,633,984.58/1,067.20
  6. Step 6: Final answer
    x = 1,531.10

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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.