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Finding the Fourth Proportional to 793.87, 1,185.96 and 631.73

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Solution

The fourth proportional to 793.87, 1,185.96 and 631.73 is: 943.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    793.87 : 1,185.96 = 631.73 : x
  2. Step 2: Convert to fraction form
    793.87/1,185.96 = 631.73/x
  3. Step 3: Cross multiply
    793.87x = 1,185.96 × 631.73
  4. Step 4: Simplify right side
    793.87x = 749,208.29
  5. Step 5: Solve for x
    x = 749,208.29/793.87
  6. Step 6: Final answer
    x = 943.74

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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.