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Finding the Third Proportional to 888 and 1,256.25

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Solution

The third proportional to 888 and 1,256.25 is: 1,777.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    888 : 1,256.25 = 1,256.25 : x
  2. Step 2: Convert to fraction form
    888/1,256.25 = 1,256.25/x
  3. Step 3: Cross multiply
    888x = 1,256.25 × 1,256.25
  4. Step 4: Simplify right side
    888x = 1,578,164.06
  5. Step 5: Solve for x
    x = 1,578,164.06/888
  6. Step 6: Final answer
    x = 1,777.21

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.