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Finding the Fourth Proportional to 791.92, 1,095.42 and 669.52

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Solution

The fourth proportional to 791.92, 1,095.42 and 669.52 is: 926.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    791.92 : 1,095.42 = 669.52 : x
  2. Step 2: Convert to fraction form
    791.92/1,095.42 = 669.52/x
  3. Step 3: Cross multiply
    791.92x = 1,095.42 × 669.52
  4. Step 4: Simplify right side
    791.92x = 733,405.60
  5. Step 5: Solve for x
    x = 733,405.60/791.92
  6. Step 6: Final answer
    x = 926.11

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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.