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Finding the Fourth Proportional to 281.07, 421.61 and 250.76

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Solution

The fourth proportional to 281.07, 421.61 and 250.76 is: 376.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    281.07 : 421.61 = 250.76 : x
  2. Step 2: Convert to fraction form
    281.07/421.61 = 250.76/x
  3. Step 3: Cross multiply
    281.07x = 421.61 × 250.76
  4. Step 4: Simplify right side
    281.07x = 105,722.72
  5. Step 5: Solve for x
    x = 105,722.72/281.07
  6. Step 6: Final answer
    x = 376.14

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