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Finding the Fourth Proportional to 343.05, 514.85 and 126.69

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Solution

The fourth proportional to 343.05, 514.85 and 126.69 is: 190.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.05 : 514.85 = 126.69 : x
  2. Step 2: Convert to fraction form
    343.05/514.85 = 126.69/x
  3. Step 3: Cross multiply
    343.05x = 514.85 × 126.69
  4. Step 4: Simplify right side
    343.05x = 65,225.71
  5. Step 5: Solve for x
    x = 65,225.71/343.05
  6. Step 6: Final answer
    x = 190.13

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