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Finding the Fourth Proportional to 207, 310.23 and 115.74

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Solution

The fourth proportional to 207, 310.23 and 115.74 is: 173.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    207 : 310.23 = 115.74 : x
  2. Step 2: Convert to fraction form
    207/310.23 = 115.74/x
  3. Step 3: Cross multiply
    207x = 310.23 × 115.74
  4. Step 4: Simplify right side
    207x = 35,906.02
  5. Step 5: Solve for x
    x = 35,906.02/207
  6. Step 6: Final answer
    x = 173.46

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