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Finding the Fourth Proportional to 359.84, 539.80 and 143.36

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Solution

The fourth proportional to 359.84, 539.80 and 143.36 is: 215.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.84 : 539.80 = 143.36 : x
  2. Step 2: Convert to fraction form
    359.84/539.80 = 143.36/x
  3. Step 3: Cross multiply
    359.84x = 539.80 × 143.36
  4. Step 4: Simplify right side
    359.84x = 77,385.73
  5. Step 5: Solve for x
    x = 77,385.73/359.84
  6. Step 6: Final answer
    x = 215.06

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.