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Finding the Fourth Proportional to 796.72, 1,099.60 and 477.66

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Solution

The fourth proportional to 796.72, 1,099.60 and 477.66 is: 659.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    796.72 : 1,099.60 = 477.66 : x
  2. Step 2: Convert to fraction form
    796.72/1,099.60 = 477.66/x
  3. Step 3: Cross multiply
    796.72x = 1,099.60 × 477.66
  4. Step 4: Simplify right side
    796.72x = 525,234.94
  5. Step 5: Solve for x
    x = 525,234.94/796.72
  6. Step 6: Final answer
    x = 659.25

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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.