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Finding the Fourth Proportional to 458, 686.98 and 226.81

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Solution

The fourth proportional to 458, 686.98 and 226.81 is: 340.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    458 : 686.98 = 226.81 : x
  2. Step 2: Convert to fraction form
    458/686.98 = 226.81/x
  3. Step 3: Cross multiply
    458x = 686.98 × 226.81
  4. Step 4: Simplify right side
    458x = 155,813.93
  5. Step 5: Solve for x
    x = 155,813.93/458
  6. Step 6: Final answer
    x = 340.21

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