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Finding the Fourth Proportional to 792.64, 1,093.86 and 443.36

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Solution

The fourth proportional to 792.64, 1,093.86 and 443.36 is: 611.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.64 : 1,093.86 = 443.36 : x
  2. Step 2: Convert to fraction form
    792.64/1,093.86 = 443.36/x
  3. Step 3: Cross multiply
    792.64x = 1,093.86 × 443.36
  4. Step 4: Simplify right side
    792.64x = 484,973.77
  5. Step 5: Solve for x
    x = 484,973.77/792.64
  6. Step 6: Final answer
    x = 611.85

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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.