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Finding the Fourth Proportional to 881.26, 1,322.82 and 650.42

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Solution

The fourth proportional to 881.26, 1,322.82 and 650.42 is: 976.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.26 : 1,322.82 = 650.42 : x
  2. Step 2: Convert to fraction form
    881.26/1,322.82 = 650.42/x
  3. Step 3: Cross multiply
    881.26x = 1,322.82 × 650.42
  4. Step 4: Simplify right side
    881.26x = 860,388.58
  5. Step 5: Solve for x
    x = 860,388.58/881.26
  6. Step 6: Final answer
    x = 976.32

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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.