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Finding the Fourth Proportional to 452.11, 678.18 and 127.48

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Solution

The fourth proportional to 452.11, 678.18 and 127.48 is: 191.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.11 : 678.18 = 127.48 : x
  2. Step 2: Convert to fraction form
    452.11/678.18 = 127.48/x
  3. Step 3: Cross multiply
    452.11x = 678.18 × 127.48
  4. Step 4: Simplify right side
    452.11x = 86,454.39
  5. Step 5: Solve for x
    x = 86,454.39/452.11
  6. Step 6: Final answer
    x = 191.22

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