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Finding the Third Proportional to 187.77 and 276.22

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Solution

The third proportional to 187.77 and 276.22 is: 406.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    187.77 : 276.22 = 276.22 : x
  2. Step 2: Convert to fraction form
    187.77/276.22 = 276.22/x
  3. Step 3: Cross multiply
    187.77x = 276.22 × 276.22
  4. Step 4: Simplify right side
    187.77x = 76,298.96
  5. Step 5: Solve for x
    x = 76,298.96/187.77
  6. Step 6: Final answer
    x = 406.35

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.