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Finding the Fourth Proportional to 634.97, 939.49 and 633.15

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Solution

The fourth proportional to 634.97, 939.49 and 633.15 is: 936.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    634.97 : 939.49 = 633.15 : x
  2. Step 2: Convert to fraction form
    634.97/939.49 = 633.15/x
  3. Step 3: Cross multiply
    634.97x = 939.49 × 633.15
  4. Step 4: Simplify right side
    634.97x = 594,836.51
  5. Step 5: Solve for x
    x = 594,836.51/634.97
  6. Step 6: Final answer
    x = 936.79

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Why These Related Problems?

These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.