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Finding the Fourth Proportional to 228.93, 315.81 and 212.46

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Solution

The fourth proportional to 228.93, 315.81 and 212.46 is: 293.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.93 : 315.81 = 212.46 : x
  2. Step 2: Convert to fraction form
    228.93/315.81 = 212.46/x
  3. Step 3: Cross multiply
    228.93x = 315.81 × 212.46
  4. Step 4: Simplify right side
    228.93x = 67,096.99
  5. Step 5: Solve for x
    x = 67,096.99/228.93
  6. Step 6: Final answer
    x = 293.09

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