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Finding the Third Proportional to 180.75 and 401.81

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Solution

The third proportional to 180.75 and 401.81 is: 893.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    180.75 : 401.81 = 401.81 : x
  2. Step 2: Convert to fraction form
    180.75/401.81 = 401.81/x
  3. Step 3: Cross multiply
    180.75x = 401.81 × 401.81
  4. Step 4: Simplify right side
    180.75x = 161,453.29
  5. Step 5: Solve for x
    x = 161,453.29/180.75
  6. Step 6: Final answer
    x = 893.24

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Why These Related Problems?

These problems maintain the same ratio (2.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.