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Finding the Fourth Proportional to 303.91, 419.45 and 185.96

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Solution

The fourth proportional to 303.91, 419.45 and 185.96 is: 256.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.91 : 419.45 = 185.96 : x
  2. Step 2: Convert to fraction form
    303.91/419.45 = 185.96/x
  3. Step 3: Cross multiply
    303.91x = 419.45 × 185.96
  4. Step 4: Simplify right side
    303.91x = 77,997.89
  5. Step 5: Solve for x
    x = 77,997.89/303.91
  6. Step 6: Final answer
    x = 256.65

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