Home / 681.03-1,023.82-545.56

Finding the Fourth Proportional to 681.03, 1,023.82 and 545.56

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Solution

The fourth proportional to 681.03, 1,023.82 and 545.56 is: 820.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    681.03 : 1,023.82 = 545.56 : x
  2. Step 2: Convert to fraction form
    681.03/1,023.82 = 545.56/x
  3. Step 3: Cross multiply
    681.03x = 1,023.82 × 545.56
  4. Step 4: Simplify right side
    681.03x = 558,551.32
  5. Step 5: Solve for x
    x = 558,551.32/681.03
  6. Step 6: Final answer
    x = 820.16

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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.