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Finding the Fourth Proportional to 792.66, 1,093.98 and 461.28

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Solution

The fourth proportional to 792.66, 1,093.98 and 461.28 is: 636.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.66 : 1,093.98 = 461.28 : x
  2. Step 2: Convert to fraction form
    792.66/1,093.98 = 461.28/x
  3. Step 3: Cross multiply
    792.66x = 1,093.98 × 461.28
  4. Step 4: Simplify right side
    792.66x = 504,631.09
  5. Step 5: Solve for x
    x = 504,631.09/792.66
  6. Step 6: Final answer
    x = 636.63

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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.