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Finding the Fourth Proportional to 359.88, 539.87 and 143.44

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Solution

The fourth proportional to 359.88, 539.87 and 143.44 is: 215.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.88 : 539.87 = 143.44 : x
  2. Step 2: Convert to fraction form
    359.88/539.87 = 143.44/x
  3. Step 3: Cross multiply
    359.88x = 539.87 × 143.44
  4. Step 4: Simplify right side
    359.88x = 77,436.89
  5. Step 5: Solve for x
    x = 77,436.89/359.88
  6. Step 6: Final answer
    x = 215.18

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