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Finding the Fourth Proportional to 1,383.27, 2,074.94 and 409.44

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Solution

The fourth proportional to 1,383.27, 2,074.94 and 409.44 is: 614.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,383.27 : 2,074.94 = 409.44 : x
  2. Step 2: Convert to fraction form
    1,383.27/2,074.94 = 409.44/x
  3. Step 3: Cross multiply
    1,383.27x = 2,074.94 × 409.44
  4. Step 4: Simplify right side
    1,383.27x = 849,563.43
  5. Step 5: Solve for x
    x = 849,563.43/1,383.27
  6. Step 6: Final answer
    x = 614.17

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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.