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Finding the Fourth Proportional to 212.05, 317.95 and 102.33

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Solution

The fourth proportional to 212.05, 317.95 and 102.33 is: 153.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    212.05 : 317.95 = 102.33 : x
  2. Step 2: Convert to fraction form
    212.05/317.95 = 102.33/x
  3. Step 3: Cross multiply
    212.05x = 317.95 × 102.33
  4. Step 4: Simplify right side
    212.05x = 32,535.57
  5. Step 5: Solve for x
    x = 32,535.57/212.05
  6. Step 6: Final answer
    x = 153.43

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