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Finding the Fourth Proportional to 340.99, 511.73 and 135.57

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Solution

The fourth proportional to 340.99, 511.73 and 135.57 is: 203.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    340.99 : 511.73 = 135.57 : x
  2. Step 2: Convert to fraction form
    340.99/511.73 = 135.57/x
  3. Step 3: Cross multiply
    340.99x = 511.73 × 135.57
  4. Step 4: Simplify right side
    340.99x = 69,375.24
  5. Step 5: Solve for x
    x = 69,375.24/340.99
  6. Step 6: Final answer
    x = 203.45

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