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Finding the Fourth Proportional to 634.05, 950.85 and 217.49

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Solution

The fourth proportional to 634.05, 950.85 and 217.49 is: 326.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.05 : 950.85 = 217.49 : x
  2. Step 2: Convert to fraction form
    634.05/950.85 = 217.49/x
  3. Step 3: Cross multiply
    634.05x = 950.85 × 217.49
  4. Step 4: Simplify right side
    634.05x = 206,795.61
  5. Step 5: Solve for x
    x = 206,795.61/634.05
  6. Step 6: Final answer
    x = 326.15

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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.