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Finding the Fourth Proportional to 445.73, 664.02 and 425.74

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Solution

The fourth proportional to 445.73, 664.02 and 425.74 is: 634.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    445.73 : 664.02 = 425.74 : x
  2. Step 2: Convert to fraction form
    445.73/664.02 = 425.74/x
  3. Step 3: Cross multiply
    445.73x = 664.02 × 425.74
  4. Step 4: Simplify right side
    445.73x = 282,694.43
  5. Step 5: Solve for x
    x = 282,694.43/445.73
  6. Step 6: Final answer
    x = 634.23

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