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Finding the Fourth Proportional to 332.67, 499 and 217.55

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Solution

The fourth proportional to 332.67, 499 and 217.55 is: 326.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    332.67 : 499 = 217.55 : x
  2. Step 2: Convert to fraction form
    332.67/499 = 217.55/x
  3. Step 3: Cross multiply
    332.67x = 499 × 217.55
  4. Step 4: Simplify right side
    332.67x = 108,554.96
  5. Step 5: Solve for x
    x = 108,554.96/332.67
  6. Step 6: Final answer
    x = 326.31

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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.