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Finding the Fourth Proportional to 409.59, 614.65 and 193.18

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Solution

The fourth proportional to 409.59, 614.65 and 193.18 is: 289.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    409.59 : 614.65 = 193.18 : x
  2. Step 2: Convert to fraction form
    409.59/614.65 = 193.18/x
  3. Step 3: Cross multiply
    409.59x = 614.65 × 193.18
  4. Step 4: Simplify right side
    409.59x = 118,738.09
  5. Step 5: Solve for x
    x = 118,738.09/409.59
  6. Step 6: Final answer
    x = 289.89

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