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Finding the Fourth Proportional to 1,796.20, 2,694.54 and 641.96

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Solution

The fourth proportional to 1,796.20, 2,694.54 and 641.96 is: 963.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,796.20 : 2,694.54 = 641.96 : x
  2. Step 2: Convert to fraction form
    1,796.20/2,694.54 = 641.96/x
  3. Step 3: Cross multiply
    1,796.20x = 2,694.54 × 641.96
  4. Step 4: Simplify right side
    1,796.20x = 1,729,786.90
  5. Step 5: Solve for x
    x = 1,729,786.90/1,796.20
  6. Step 6: Final answer
    x = 963.03

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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.