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Finding the Fourth Proportional to 799.27, 1,103.12 and 668.23

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Solution

The fourth proportional to 799.27, 1,103.12 and 668.23 is: 922.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.27 : 1,103.12 = 668.23 : x
  2. Step 2: Convert to fraction form
    799.27/1,103.12 = 668.23/x
  3. Step 3: Cross multiply
    799.27x = 1,103.12 × 668.23
  4. Step 4: Simplify right side
    799.27x = 737,137.88
  5. Step 5: Solve for x
    x = 737,137.88/799.27
  6. Step 6: Final answer
    x = 922.26

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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.