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Finding the Fourth Proportional to 318.43, 477.39 and 164.16

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Solution

The fourth proportional to 318.43, 477.39 and 164.16 is: 246.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    318.43 : 477.39 = 164.16 : x
  2. Step 2: Convert to fraction form
    318.43/477.39 = 164.16/x
  3. Step 3: Cross multiply
    318.43x = 477.39 × 164.16
  4. Step 4: Simplify right side
    318.43x = 78,368.96
  5. Step 5: Solve for x
    x = 78,368.96/318.43
  6. Step 6: Final answer
    x = 246.11

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