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Finding the Fourth Proportional to 843.55, 1,163.87 and 470.44

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Solution

The fourth proportional to 843.55, 1,163.87 and 470.44 is: 649.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    843.55 : 1,163.87 = 470.44 : x
  2. Step 2: Convert to fraction form
    843.55/1,163.87 = 470.44/x
  3. Step 3: Cross multiply
    843.55x = 1,163.87 × 470.44
  4. Step 4: Simplify right side
    843.55x = 547,525.74
  5. Step 5: Solve for x
    x = 547,525.74/843.55
  6. Step 6: Final answer
    x = 649.08

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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.