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Finding the Fourth Proportional to 425.97, 641.21 and 363.33

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Solution

The fourth proportional to 425.97, 641.21 and 363.33 is: 546.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.97 : 641.21 = 363.33 : x
  2. Step 2: Convert to fraction form
    425.97/641.21 = 363.33/x
  3. Step 3: Cross multiply
    425.97x = 641.21 × 363.33
  4. Step 4: Simplify right side
    425.97x = 232,969.01
  5. Step 5: Solve for x
    x = 232,969.01/425.97
  6. Step 6: Final answer
    x = 546.91

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.