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Finding the Fourth Proportional to 796.32, 1,201.50 and 789.84

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Solution

The fourth proportional to 796.32, 1,201.50 and 789.84 is: 1,191.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.32 : 1,201.50 = 789.84 : x
  2. Step 2: Convert to fraction form
    796.32/1,201.50 = 789.84/x
  3. Step 3: Cross multiply
    796.32x = 1,201.50 × 789.84
  4. Step 4: Simplify right side
    796.32x = 948,992.76
  5. Step 5: Solve for x
    x = 948,992.76/796.32
  6. Step 6: Final answer
    x = 1,191.72

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.