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Finding the Fourth Proportional to 801.73, 1,202.73 and 281.71

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Solution

The fourth proportional to 801.73, 1,202.73 and 281.71 is: 422.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    801.73 : 1,202.73 = 281.71 : x
  2. Step 2: Convert to fraction form
    801.73/1,202.73 = 281.71/x
  3. Step 3: Cross multiply
    801.73x = 1,202.73 × 281.71
  4. Step 4: Simplify right side
    801.73x = 338,821.07
  5. Step 5: Solve for x
    x = 338,821.07/801.73
  6. Step 6: Final answer
    x = 422.61

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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.