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Finding the Fourth Proportional to 1,448.43, 2,171.08 and 627.09

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Solution

The fourth proportional to 1,448.43, 2,171.08 and 627.09 is: 939.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,448.43 : 2,171.08 = 627.09 : x
  2. Step 2: Convert to fraction form
    1,448.43/2,171.08 = 627.09/x
  3. Step 3: Cross multiply
    1,448.43x = 2,171.08 × 627.09
  4. Step 4: Simplify right side
    1,448.43x = 1,361,462.56
  5. Step 5: Solve for x
    x = 1,361,462.56/1,448.43
  6. Step 6: Final answer
    x = 939.96

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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.