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Finding the Fourth Proportional to 422.46, 632.10 and 353.25

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Solution

The fourth proportional to 422.46, 632.10 and 353.25 is: 528.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    422.46 : 632.10 = 353.25 : x
  2. Step 2: Convert to fraction form
    422.46/632.10 = 353.25/x
  3. Step 3: Cross multiply
    422.46x = 632.10 × 353.25
  4. Step 4: Simplify right side
    422.46x = 223,289.33
  5. Step 5: Solve for x
    x = 223,289.33/422.46
  6. Step 6: Final answer
    x = 528.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.