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Finding the Fourth Proportional to 789.40, 1,183.11 and 463.96

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Solution

The fourth proportional to 789.40, 1,183.11 and 463.96 is: 695.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    789.40 : 1,183.11 = 463.96 : x
  2. Step 2: Convert to fraction form
    789.40/1,183.11 = 463.96/x
  3. Step 3: Cross multiply
    789.40x = 1,183.11 × 463.96
  4. Step 4: Simplify right side
    789.40x = 548,915.72
  5. Step 5: Solve for x
    x = 548,915.72/789.40
  6. Step 6: Final answer
    x = 695.36

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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.