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Finding the Fourth Proportional to 359.98, 539.99 and 154.64

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Solution

The fourth proportional to 359.98, 539.99 and 154.64 is: 231.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.98 : 539.99 = 154.64 : x
  2. Step 2: Convert to fraction form
    359.98/539.99 = 154.64/x
  3. Step 3: Cross multiply
    359.98x = 539.99 × 154.64
  4. Step 4: Simplify right side
    359.98x = 83,504.05
  5. Step 5: Solve for x
    x = 83,504.05/359.98
  6. Step 6: Final answer
    x = 231.97

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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.