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Finding the Fourth Proportional to 283.02, 423.81 and 191.40

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Solution

The fourth proportional to 283.02, 423.81 and 191.40 is: 286.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    283.02 : 423.81 = 191.40 : x
  2. Step 2: Convert to fraction form
    283.02/423.81 = 191.40/x
  3. Step 3: Cross multiply
    283.02x = 423.81 × 191.40
  4. Step 4: Simplify right side
    283.02x = 81,117.23
  5. Step 5: Solve for x
    x = 81,117.23/283.02
  6. Step 6: Final answer
    x = 286.61

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