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Finding the Fourth Proportional to 500.88, 751.55 and 257.28

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Solution

The fourth proportional to 500.88, 751.55 and 257.28 is: 386.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    500.88 : 751.55 = 257.28 : x
  2. Step 2: Convert to fraction form
    500.88/751.55 = 257.28/x
  3. Step 3: Cross multiply
    500.88x = 751.55 × 257.28
  4. Step 4: Simplify right side
    500.88x = 193,356.85
  5. Step 5: Solve for x
    x = 193,356.85/500.88
  6. Step 6: Final answer
    x = 386.03

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