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Finding the Fourth Proportional to 228.91, 343.46 and 84.64

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Solution

The fourth proportional to 228.91, 343.46 and 84.64 is: 127.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    228.91 : 343.46 = 84.64 : x
  2. Step 2: Convert to fraction form
    228.91/343.46 = 84.64/x
  3. Step 3: Cross multiply
    228.91x = 343.46 × 84.64
  4. Step 4: Simplify right side
    228.91x = 29,070.45
  5. Step 5: Solve for x
    x = 29,070.45/228.91
  6. Step 6: Final answer
    x = 127.00

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