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Finding the Third Proportional to 1,238.73 and 1,325.58

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Solution

The third proportional to 1,238.73 and 1,325.58 is: 1,418.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238.73 : 1,325.58 = 1,325.58 : x
  2. Step 2: Convert to fraction form
    1,238.73/1,325.58 = 1,325.58/x
  3. Step 3: Cross multiply
    1,238.73x = 1,325.58 × 1,325.58
  4. Step 4: Simplify right side
    1,238.73x = 1,757,172.90
  5. Step 5: Solve for x
    x = 1,757,172.90/1,238.73
  6. Step 6: Final answer
    x = 1,418.53

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.