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Finding the Fourth Proportional to 799.64, 1,103.20 and 467.96

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Solution

The fourth proportional to 799.64, 1,103.20 and 467.96 is: 645.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    799.64 : 1,103.20 = 467.96 : x
  2. Step 2: Convert to fraction form
    799.64/1,103.20 = 467.96/x
  3. Step 3: Cross multiply
    799.64x = 1,103.20 × 467.96
  4. Step 4: Simplify right side
    799.64x = 516,253.47
  5. Step 5: Solve for x
    x = 516,253.47/799.64
  6. Step 6: Final answer
    x = 645.61

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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.