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Finding the Fourth Proportional to 2,206.56, 3,309.27 and 908.94

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Solution

The fourth proportional to 2,206.56, 3,309.27 and 908.94 is: 1,363.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,206.56 : 3,309.27 = 908.94 : x
  2. Step 2: Convert to fraction form
    2,206.56/3,309.27 = 908.94/x
  3. Step 3: Cross multiply
    2,206.56x = 3,309.27 × 908.94
  4. Step 4: Simplify right side
    2,206.56x = 3,007,927.87
  5. Step 5: Solve for x
    x = 3,007,927.87/2,206.56
  6. Step 6: Final answer
    x = 1,363.18

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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.