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Finding the Fourth Proportional to 451.53, 677.05 and 143.30

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Solution

The fourth proportional to 451.53, 677.05 and 143.30 is: 214.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    451.53 : 677.05 = 143.30 : x
  2. Step 2: Convert to fraction form
    451.53/677.05 = 143.30/x
  3. Step 3: Cross multiply
    451.53x = 677.05 × 143.30
  4. Step 4: Simplify right side
    451.53x = 97,021.27
  5. Step 5: Solve for x
    x = 97,021.27/451.53
  6. Step 6: Final answer
    x = 214.87

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