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Finding the Fourth Proportional to 483.73, 721.81 and 425.41

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Solution

The fourth proportional to 483.73, 721.81 and 425.41 is: 634.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.73 : 721.81 = 425.41 : x
  2. Step 2: Convert to fraction form
    483.73/721.81 = 425.41/x
  3. Step 3: Cross multiply
    483.73x = 721.81 × 425.41
  4. Step 4: Simplify right side
    483.73x = 307,066.26
  5. Step 5: Solve for x
    x = 307,066.26/483.73
  6. Step 6: Final answer
    x = 634.79

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.