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Finding the Fourth Proportional to 358.72, 538.16 and 127.61

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Solution

The fourth proportional to 358.72, 538.16 and 127.61 is: 191.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    358.72 : 538.16 = 127.61 : x
  2. Step 2: Convert to fraction form
    358.72/538.16 = 127.61/x
  3. Step 3: Cross multiply
    358.72x = 538.16 × 127.61
  4. Step 4: Simplify right side
    358.72x = 68,674.97
  5. Step 5: Solve for x
    x = 68,674.97/358.72
  6. Step 6: Final answer
    x = 191.44

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