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Finding the Fourth Proportional to 827.62, 1,241.02 and 481.05

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Solution

The fourth proportional to 827.62, 1,241.02 and 481.05 is: 721.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    827.62 : 1,241.02 = 481.05 : x
  2. Step 2: Convert to fraction form
    827.62/1,241.02 = 481.05/x
  3. Step 3: Cross multiply
    827.62x = 1,241.02 × 481.05
  4. Step 4: Simplify right side
    827.62x = 596,993.72
  5. Step 5: Solve for x
    x = 596,993.72/827.62
  6. Step 6: Final answer
    x = 721.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.