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Finding the Fourth Proportional to 1,614.33, 2,422.41 and 640.51

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Solution

The fourth proportional to 1,614.33, 2,422.41 and 640.51 is: 961.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,614.33 : 2,422.41 = 640.51 : x
  2. Step 2: Convert to fraction form
    1,614.33/2,422.41 = 640.51/x
  3. Step 3: Cross multiply
    1,614.33x = 2,422.41 × 640.51
  4. Step 4: Simplify right side
    1,614.33x = 1,551,569.37
  5. Step 5: Solve for x
    x = 1,551,569.37/1,614.33
  6. Step 6: Final answer
    x = 961.12

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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.