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Finding the Fourth Proportional to 627.21, 940.86 and 210.72

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Solution

The fourth proportional to 627.21, 940.86 and 210.72 is: 316.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    627.21 : 940.86 = 210.72 : x
  2. Step 2: Convert to fraction form
    627.21/940.86 = 210.72/x
  3. Step 3: Cross multiply
    627.21x = 940.86 × 210.72
  4. Step 4: Simplify right side
    627.21x = 198,258.09
  5. Step 5: Solve for x
    x = 198,258.09/627.21
  6. Step 6: Final answer
    x = 316.10

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