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Finding the Fourth Proportional to 843.04, 1,163.28 and 493.84

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Solution

The fourth proportional to 843.04, 1,163.28 and 493.84 is: 681.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    843.04 : 1,163.28 = 493.84 : x
  2. Step 2: Convert to fraction form
    843.04/1,163.28 = 493.84/x
  3. Step 3: Cross multiply
    843.04x = 1,163.28 × 493.84
  4. Step 4: Simplify right side
    843.04x = 574,474.20
  5. Step 5: Solve for x
    x = 574,474.20/843.04
  6. Step 6: Final answer
    x = 681.43

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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.