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Finding the Fourth Proportional to 412.26, 618.64 and 155.76

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Solution

The fourth proportional to 412.26, 618.64 and 155.76 is: 233.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    412.26 : 618.64 = 155.76 : x
  2. Step 2: Convert to fraction form
    412.26/618.64 = 155.76/x
  3. Step 3: Cross multiply
    412.26x = 618.64 × 155.76
  4. Step 4: Simplify right side
    412.26x = 96,359.37
  5. Step 5: Solve for x
    x = 96,359.37/412.26
  6. Step 6: Final answer
    x = 233.73

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