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Finding the Fourth Proportional to 792.40, 1,093.58 and 456.41

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Solution

The fourth proportional to 792.40, 1,093.58 and 456.41 is: 629.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    792.40 : 1,093.58 = 456.41 : x
  2. Step 2: Convert to fraction form
    792.40/1,093.58 = 456.41/x
  3. Step 3: Cross multiply
    792.40x = 1,093.58 × 456.41
  4. Step 4: Simplify right side
    792.40x = 499,120.85
  5. Step 5: Solve for x
    x = 499,120.85/792.40
  6. Step 6: Final answer
    x = 629.88

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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.