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Finding the Fourth Proportional to 229, 315.92 and 135.70

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Solution

The fourth proportional to 229, 315.92 and 135.70 is: 187.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    229 : 315.92 = 135.70 : x
  2. Step 2: Convert to fraction form
    229/315.92 = 135.70/x
  3. Step 3: Cross multiply
    229x = 315.92 × 135.70
  4. Step 4: Simplify right side
    229x = 42,870.34
  5. Step 5: Solve for x
    x = 42,870.34/229
  6. Step 6: Final answer
    x = 187.21

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