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Finding the Fourth Proportional to 457.47, 684.98 and 274.61

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Solution

The fourth proportional to 457.47, 684.98 and 274.61 is: 411.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    457.47 : 684.98 = 274.61 : x
  2. Step 2: Convert to fraction form
    457.47/684.98 = 274.61/x
  3. Step 3: Cross multiply
    457.47x = 684.98 × 274.61
  4. Step 4: Simplify right side
    457.47x = 188,097.56
  5. Step 5: Solve for x
    x = 188,097.56/457.47
  6. Step 6: Final answer
    x = 411.17

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