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Finding the Fourth Proportional to 799.85, 1,103.76 and 468.29

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Solution

The fourth proportional to 799.85, 1,103.76 and 468.29 is: 646.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.85 : 1,103.76 = 468.29 : x
  2. Step 2: Convert to fraction form
    799.85/1,103.76 = 468.29/x
  3. Step 3: Cross multiply
    799.85x = 1,103.76 × 468.29
  4. Step 4: Simplify right side
    799.85x = 516,874.25
  5. Step 5: Solve for x
    x = 516,874.25/799.85
  6. Step 6: Final answer
    x = 646.22

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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.