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Finding the Fourth Proportional to 727.67, 1,083.99 and 682.85

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Solution

The fourth proportional to 727.67, 1,083.99 and 682.85 is: 1,017.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    727.67 : 1,083.99 = 682.85 : x
  2. Step 2: Convert to fraction form
    727.67/1,083.99 = 682.85/x
  3. Step 3: Cross multiply
    727.67x = 1,083.99 × 682.85
  4. Step 4: Simplify right side
    727.67x = 740,197.15
  5. Step 5: Solve for x
    x = 740,197.15/727.67
  6. Step 6: Final answer
    x = 1,017.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.