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Finding the Fourth Proportional to 1,849.20, 2,773.26 and 694.68

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Solution

The fourth proportional to 1,849.20, 2,773.26 and 694.68 is: 1,041.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,849.20 : 2,773.26 = 694.68 : x
  2. Step 2: Convert to fraction form
    1,849.20/2,773.26 = 694.68/x
  3. Step 3: Cross multiply
    1,849.20x = 2,773.26 × 694.68
  4. Step 4: Simplify right side
    1,849.20x = 1,926,528.26
  5. Step 5: Solve for x
    x = 1,926,528.26/1,849.20
  6. Step 6: Final answer
    x = 1,041.82

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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.