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Finding the Fourth Proportional to 792.74, 1,093.87 and 443.45

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Solution

The fourth proportional to 792.74, 1,093.87 and 443.45 is: 611.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.74 : 1,093.87 = 443.45 : x
  2. Step 2: Convert to fraction form
    792.74/1,093.87 = 443.45/x
  3. Step 3: Cross multiply
    792.74x = 1,093.87 × 443.45
  4. Step 4: Simplify right side
    792.74x = 485,076.65
  5. Step 5: Solve for x
    x = 485,076.65/792.74
  6. Step 6: Final answer
    x = 611.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.