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Finding the Fourth Proportional to 287.26, 430.92 and 94.92

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Solution

The fourth proportional to 287.26, 430.92 and 94.92 is: 142.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    287.26 : 430.92 = 94.92 : x
  2. Step 2: Convert to fraction form
    287.26/430.92 = 94.92/x
  3. Step 3: Cross multiply
    287.26x = 430.92 × 94.92
  4. Step 4: Simplify right side
    287.26x = 40,902.93
  5. Step 5: Solve for x
    x = 40,902.93/287.26
  6. Step 6: Final answer
    x = 142.39

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