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Finding the Fourth Proportional to 328.33, 491.95 and 145.27

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Solution

The fourth proportional to 328.33, 491.95 and 145.27 is: 217.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    328.33 : 491.95 = 145.27 : x
  2. Step 2: Convert to fraction form
    328.33/491.95 = 145.27/x
  3. Step 3: Cross multiply
    328.33x = 491.95 × 145.27
  4. Step 4: Simplify right side
    328.33x = 71,463.98
  5. Step 5: Solve for x
    x = 71,463.98/328.33
  6. Step 6: Final answer
    x = 217.66

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