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Finding the Fourth Proportional to 266.74, 399.86 and 104.38

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Solution

The fourth proportional to 266.74, 399.86 and 104.38 is: 156.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    266.74 : 399.86 = 104.38 : x
  2. Step 2: Convert to fraction form
    266.74/399.86 = 104.38/x
  3. Step 3: Cross multiply
    266.74x = 399.86 × 104.38
  4. Step 4: Simplify right side
    266.74x = 41,737.39
  5. Step 5: Solve for x
    x = 41,737.39/266.74
  6. Step 6: Final answer
    x = 156.47

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