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Finding the Fourth Proportional to 359.78, 496.26 and 226.89

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Solution

The fourth proportional to 359.78, 496.26 and 226.89 is: 312.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.78 : 496.26 = 226.89 : x
  2. Step 2: Convert to fraction form
    359.78/496.26 = 226.89/x
  3. Step 3: Cross multiply
    359.78x = 496.26 × 226.89
  4. Step 4: Simplify right side
    359.78x = 112,596.43
  5. Step 5: Solve for x
    x = 112,596.43/359.78
  6. Step 6: Final answer
    x = 312.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.