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Finding the Fourth Proportional to 423, 634.74 and 195

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Solution

The fourth proportional to 423, 634.74 and 195 is: 292.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    423 : 634.74 = 195 : x
  2. Step 2: Convert to fraction form
    423/634.74 = 195/x
  3. Step 3: Cross multiply
    423x = 634.74 × 195
  4. Step 4: Simplify right side
    423x = 123,774.30
  5. Step 5: Solve for x
    x = 123,774.30/423
  6. Step 6: Final answer
    x = 292.61

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