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Finding the Fourth Proportional to 452.55, 678.71 and 127.85

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Solution

The fourth proportional to 452.55, 678.71 and 127.85 is: 191.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    452.55 : 678.71 = 127.85 : x
  2. Step 2: Convert to fraction form
    452.55/678.71 = 127.85/x
  3. Step 3: Cross multiply
    452.55x = 678.71 × 127.85
  4. Step 4: Simplify right side
    452.55x = 86,770.00
  5. Step 5: Solve for x
    x = 86,770.00/452.55
  6. Step 6: Final answer
    x = 191.73

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