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Finding the Fourth Proportional to 1,067.24, 1,600.94 and 409.43

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Solution

The fourth proportional to 1,067.24, 1,600.94 and 409.43 is: 614.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,067.24 : 1,600.94 = 409.43 : x
  2. Step 2: Convert to fraction form
    1,067.24/1,600.94 = 409.43/x
  3. Step 3: Cross multiply
    1,067.24x = 1,600.94 × 409.43
  4. Step 4: Simplify right side
    1,067.24x = 655,464.81
  5. Step 5: Solve for x
    x = 655,464.81/1,067.24
  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.