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Finding the Fourth Proportional to 796.92, 1,195.69 and 385.95

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Solution

The fourth proportional to 796.92, 1,195.69 and 385.95 is: 579.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.92 : 1,195.69 = 385.95 : x
  2. Step 2: Convert to fraction form
    796.92/1,195.69 = 385.95/x
  3. Step 3: Cross multiply
    796.92x = 1,195.69 × 385.95
  4. Step 4: Simplify right side
    796.92x = 461,476.56
  5. Step 5: Solve for x
    x = 461,476.56/796.92
  6. Step 6: Final answer
    x = 579.08

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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.