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Finding the Fourth Proportional to 459.34, 687.79 and 242.46

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Solution

The fourth proportional to 459.34, 687.79 and 242.46 is: 363.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    459.34 : 687.79 = 242.46 : x
  2. Step 2: Convert to fraction form
    459.34/687.79 = 242.46/x
  3. Step 3: Cross multiply
    459.34x = 687.79 × 242.46
  4. Step 4: Simplify right side
    459.34x = 166,760.96
  5. Step 5: Solve for x
    x = 166,760.96/459.34
  6. Step 6: Final answer
    x = 363.05

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