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Finding the Fourth Proportional to 409.74, 614.41 and 135.74

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Solution

The fourth proportional to 409.74, 614.41 and 135.74 is: 203.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.74 : 614.41 = 135.74 : x
  2. Step 2: Convert to fraction form
    409.74/614.41 = 135.74/x
  3. Step 3: Cross multiply
    409.74x = 614.41 × 135.74
  4. Step 4: Simplify right side
    409.74x = 83,399.00
  5. Step 5: Solve for x
    x = 83,399.00/409.74
  6. Step 6: Final answer
    x = 203.54

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