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Finding the Fourth Proportional to 881.04, 1,217.36 and 696

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Solution

The fourth proportional to 881.04, 1,217.36 and 696 is: 961.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    881.04 : 1,217.36 = 696 : x
  2. Step 2: Convert to fraction form
    881.04/1,217.36 = 696/x
  3. Step 3: Cross multiply
    881.04x = 1,217.36 × 696
  4. Step 4: Simplify right side
    881.04x = 847,282.56
  5. Step 5: Solve for x
    x = 847,282.56/881.04
  6. Step 6: Final answer
    x = 961.68

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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.