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Finding the Fourth Proportional to 419.01, 628.58 and 130.38

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Solution

The fourth proportional to 419.01, 628.58 and 130.38 is: 195.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    419.01 : 628.58 = 130.38 : x
  2. Step 2: Convert to fraction form
    419.01/628.58 = 130.38/x
  3. Step 3: Cross multiply
    419.01x = 628.58 × 130.38
  4. Step 4: Simplify right side
    419.01x = 81,954.26
  5. Step 5: Solve for x
    x = 81,954.26/419.01
  6. Step 6: Final answer
    x = 195.59

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