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Finding the Fourth Proportional to 634.87, 952.71 and 418.60

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Solution

The fourth proportional to 634.87, 952.71 and 418.60 is: 628.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.87 : 952.71 = 418.60 : x
  2. Step 2: Convert to fraction form
    634.87/952.71 = 418.60/x
  3. Step 3: Cross multiply
    634.87x = 952.71 × 418.60
  4. Step 4: Simplify right side
    634.87x = 398,804.41
  5. Step 5: Solve for x
    x = 398,804.41/634.87
  6. Step 6: Final answer
    x = 628.17

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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.