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Finding the Fourth Proportional to 255.03, 382.77 and 145.56

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Solution

The fourth proportional to 255.03, 382.77 and 145.56 is: 218.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    255.03 : 382.77 = 145.56 : x
  2. Step 2: Convert to fraction form
    255.03/382.77 = 145.56/x
  3. Step 3: Cross multiply
    255.03x = 382.77 × 145.56
  4. Step 4: Simplify right side
    255.03x = 55,717.44
  5. Step 5: Solve for x
    x = 55,717.44/255.03
  6. Step 6: Final answer
    x = 218.47

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