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Finding the Fourth Proportional to 656.41, 985.20 and 271.93

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Solution

The fourth proportional to 656.41, 985.20 and 271.93 is: 408.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    656.41 : 985.20 = 271.93 : x
  2. Step 2: Convert to fraction form
    656.41/985.20 = 271.93/x
  3. Step 3: Cross multiply
    656.41x = 985.20 × 271.93
  4. Step 4: Simplify right side
    656.41x = 267,905.44
  5. Step 5: Solve for x
    x = 267,905.44/656.41
  6. Step 6: Final answer
    x = 408.14

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