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Finding the Fourth Proportional to 634.87, 951.86 and 218.29

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Solution

The fourth proportional to 634.87, 951.86 and 218.29 is: 327.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.87 : 951.86 = 218.29 : x
  2. Step 2: Convert to fraction form
    634.87/951.86 = 218.29/x
  3. Step 3: Cross multiply
    634.87x = 951.86 × 218.29
  4. Step 4: Simplify right side
    634.87x = 207,779.69
  5. Step 5: Solve for x
    x = 207,779.69/634.87
  6. Step 6: Final answer
    x = 327.28

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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.