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Finding the Fourth Proportional to 305.12, 457.99 and 223.72

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Solution

The fourth proportional to 305.12, 457.99 and 223.72 is: 335.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    305.12 : 457.99 = 223.72 : x
  2. Step 2: Convert to fraction form
    305.12/457.99 = 223.72/x
  3. Step 3: Cross multiply
    305.12x = 457.99 × 223.72
  4. Step 4: Simplify right side
    305.12x = 102,461.52
  5. Step 5: Solve for x
    x = 102,461.52/305.12
  6. Step 6: Final answer
    x = 335.81

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