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Finding the Fourth Proportional to 1,327.73, 1,990.62 and 633.83

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Solution

The fourth proportional to 1,327.73, 1,990.62 and 633.83 is: 950.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,327.73 : 1,990.62 = 633.83 : x
  2. Step 2: Convert to fraction form
    1,327.73/1,990.62 = 633.83/x
  3. Step 3: Cross multiply
    1,327.73x = 1,990.62 × 633.83
  4. Step 4: Simplify right side
    1,327.73x = 1,261,719.65
  5. Step 5: Solve for x
    x = 1,261,719.65/1,327.73
  6. Step 6: Final answer
    x = 950.28

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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.