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Finding the Fourth Proportional to 357.18, 535.80 and 137.82

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Solution

The fourth proportional to 357.18, 535.80 and 137.82 is: 206.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    357.18 : 535.80 = 137.82 : x
  2. Step 2: Convert to fraction form
    357.18/535.80 = 137.82/x
  3. Step 3: Cross multiply
    357.18x = 535.80 × 137.82
  4. Step 4: Simplify right side
    357.18x = 73,843.96
  5. Step 5: Solve for x
    x = 73,843.96/357.18
  6. Step 6: Final answer
    x = 206.74

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