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Finding the Fourth Proportional to 306.06, 422.10 and 212.64

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Solution

The fourth proportional to 306.06, 422.10 and 212.64 is: 293.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.06 : 422.10 = 212.64 : x
  2. Step 2: Convert to fraction form
    306.06/422.10 = 212.64/x
  3. Step 3: Cross multiply
    306.06x = 422.10 × 212.64
  4. Step 4: Simplify right side
    306.06x = 89,755.34
  5. Step 5: Solve for x
    x = 89,755.34/306.06
  6. Step 6: Final answer
    x = 293.26

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