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Finding the Fourth Proportional to 792.70, 1,093.90 and 443.46

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Solution

The fourth proportional to 792.70, 1,093.90 and 443.46 is: 611.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.70 : 1,093.90 = 443.46 : x
  2. Step 2: Convert to fraction form
    792.70/1,093.90 = 443.46/x
  3. Step 3: Cross multiply
    792.70x = 1,093.90 × 443.46
  4. Step 4: Simplify right side
    792.70x = 485,100.89
  5. Step 5: Solve for x
    x = 485,100.89/792.70
  6. Step 6: Final answer
    x = 611.96

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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.