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Finding the Fourth Proportional to 2,208.68, 3,313.34 and 910.44

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Solution

The fourth proportional to 2,208.68, 3,313.34 and 910.44 is: 1,365.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,208.68 : 3,313.34 = 910.44 : x
  2. Step 2: Convert to fraction form
    2,208.68/3,313.34 = 910.44/x
  3. Step 3: Cross multiply
    2,208.68x = 3,313.34 × 910.44
  4. Step 4: Simplify right side
    2,208.68x = 3,016,597.27
  5. Step 5: Solve for x
    x = 3,016,597.27/2,208.68
  6. Step 6: Final answer
    x = 1,365.79

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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.