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Finding the Fourth Proportional to 796.86, 1,099.44 and 465.21

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Solution

The fourth proportional to 796.86, 1,099.44 and 465.21 is: 641.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.86 : 1,099.44 = 465.21 : x
  2. Step 2: Convert to fraction form
    796.86/1,099.44 = 465.21/x
  3. Step 3: Cross multiply
    796.86x = 1,099.44 × 465.21
  4. Step 4: Simplify right side
    796.86x = 511,470.48
  5. Step 5: Solve for x
    x = 511,470.48/796.86
  6. Step 6: Final answer
    x = 641.86

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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.