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Finding the Fourth Proportional to 342.57, 513.91 and 126.14

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Solution

The fourth proportional to 342.57, 513.91 and 126.14 is: 189.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    342.57 : 513.91 = 126.14 : x
  2. Step 2: Convert to fraction form
    342.57/513.91 = 126.14/x
  3. Step 3: Cross multiply
    342.57x = 513.91 × 126.14
  4. Step 4: Simplify right side
    342.57x = 64,821.72
  5. Step 5: Solve for x
    x = 64,821.72/342.57
  6. Step 6: Final answer
    x = 189.22

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