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Finding the Fourth Proportional to 415.32, 622.98 and 126.75

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Solution

The fourth proportional to 415.32, 622.98 and 126.75 is: 190.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    415.32 : 622.98 = 126.75 : x
  2. Step 2: Convert to fraction form
    415.32/622.98 = 126.75/x
  3. Step 3: Cross multiply
    415.32x = 622.98 × 126.75
  4. Step 4: Simplify right side
    415.32x = 78,962.72
  5. Step 5: Solve for x
    x = 78,962.72/415.32
  6. Step 6: Final answer
    x = 190.13

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