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Finding the Fourth Proportional to 888.66, 1,226.68 and 699.11

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Solution

The fourth proportional to 888.66, 1,226.68 and 699.11 is: 965.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    888.66 : 1,226.68 = 699.11 : x
  2. Step 2: Convert to fraction form
    888.66/1,226.68 = 699.11/x
  3. Step 3: Cross multiply
    888.66x = 1,226.68 × 699.11
  4. Step 4: Simplify right side
    888.66x = 857,584.25
  5. Step 5: Solve for x
    x = 857,584.25/888.66
  6. Step 6: Final answer
    x = 965.04

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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.