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Finding the Fourth Proportional to 359.74, 496.22 and 221.50

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Solution

The fourth proportional to 359.74, 496.22 and 221.50 is: 305.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.74 : 496.22 = 221.50 : x
  2. Step 2: Convert to fraction form
    359.74/496.22 = 221.50/x
  3. Step 3: Cross multiply
    359.74x = 496.22 × 221.50
  4. Step 4: Simplify right side
    359.74x = 109,912.73
  5. Step 5: Solve for x
    x = 109,912.73/359.74
  6. Step 6: Final answer
    x = 305.53

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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.