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Finding the Fourth Proportional to 496.80, 744.80 and 208.04

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Solution

The fourth proportional to 496.80, 744.80 and 208.04 is: 311.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.80 : 744.80 = 208.04 : x
  2. Step 2: Convert to fraction form
    496.80/744.80 = 208.04/x
  3. Step 3: Cross multiply
    496.80x = 744.80 × 208.04
  4. Step 4: Simplify right side
    496.80x = 154,943.43
  5. Step 5: Solve for x
    x = 154,943.43/496.80
  6. Step 6: Final answer
    x = 311.88

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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.