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Finding the Fourth Proportional to 317.74, 438.87 and 240.46

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Solution

The fourth proportional to 317.74, 438.87 and 240.46 is: 332.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    317.74 : 438.87 = 240.46 : x
  2. Step 2: Convert to fraction form
    317.74/438.87 = 240.46/x
  3. Step 3: Cross multiply
    317.74x = 438.87 × 240.46
  4. Step 4: Simplify right side
    317.74x = 105,530.68
  5. Step 5: Solve for x
    x = 105,530.68/317.74
  6. Step 6: Final answer
    x = 332.13

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