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Finding the Fourth Proportional to 359.68, 496.60 and 276.64

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Solution

The fourth proportional to 359.68, 496.60 and 276.64 is: 381.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    359.68 : 496.60 = 276.64 : x
  2. Step 2: Convert to fraction form
    359.68/496.60 = 276.64/x
  3. Step 3: Cross multiply
    359.68x = 496.60 × 276.64
  4. Step 4: Simplify right side
    359.68x = 137,375.56
  5. Step 5: Solve for x
    x = 137,375.56/359.68
  6. Step 6: Final answer
    x = 381.94

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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.