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Finding the Fourth Proportional to 865.42, 1,194.99 and 677.03

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Solution

The fourth proportional to 865.42, 1,194.99 and 677.03 is: 934.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    865.42 : 1,194.99 = 677.03 : x
  2. Step 2: Convert to fraction form
    865.42/1,194.99 = 677.03/x
  3. Step 3: Cross multiply
    865.42x = 1,194.99 × 677.03
  4. Step 4: Simplify right side
    865.42x = 809,035.57
  5. Step 5: Solve for x
    x = 809,035.57/865.42
  6. Step 6: Final answer
    x = 934.85

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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.