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Finding the Fourth Proportional to 359.39, 539.09 and 112.62

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Solution

The fourth proportional to 359.39, 539.09 and 112.62 is: 168.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.39 : 539.09 = 112.62 : x
  2. Step 2: Convert to fraction form
    359.39/539.09 = 112.62/x
  3. Step 3: Cross multiply
    359.39x = 539.09 × 112.62
  4. Step 4: Simplify right side
    359.39x = 60,709.62
  5. Step 5: Solve for x
    x = 60,709.62/359.39
  6. Step 6: Final answer
    x = 168.93

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Why These Related Problems?

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