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Finding the Fourth Proportional to 1,644.43, 2,462.73 and 912.19

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Solution

The fourth proportional to 1,644.43, 2,462.73 and 912.19 is: 1,366.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,644.43 : 2,462.73 = 912.19 : x
  2. Step 2: Convert to fraction form
    1,644.43/2,462.73 = 912.19/x
  3. Step 3: Cross multiply
    1,644.43x = 2,462.73 × 912.19
  4. Step 4: Simplify right side
    1,644.43x = 2,246,477.68
  5. Step 5: Solve for x
    x = 2,246,477.68/1,644.43
  6. Step 6: Final answer
    x = 1,366.11

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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.