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Finding the Fourth Proportional to 354.39, 531.54 and 110.91

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Solution

The fourth proportional to 354.39, 531.54 and 110.91 is: 166.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    354.39 : 531.54 = 110.91 : x
  2. Step 2: Convert to fraction form
    354.39/531.54 = 110.91/x
  3. Step 3: Cross multiply
    354.39x = 531.54 × 110.91
  4. Step 4: Simplify right side
    354.39x = 58,954.71
  5. Step 5: Solve for x
    x = 58,954.71/354.39
  6. Step 6: Final answer
    x = 166.36

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