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Finding the Third Proportional to 321 and 379.50

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Solution

The third proportional to 321 and 379.50 is: 448.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    321 : 379.50 = 379.50 : x
  2. Step 2: Convert to fraction form
    321/379.50 = 379.50/x
  3. Step 3: Cross multiply
    321x = 379.50 × 379.50
  4. Step 4: Simplify right side
    321x = 144,020.25
  5. Step 5: Solve for x
    x = 144,020.25/321
  6. Step 6: Final answer
    x = 448.66

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