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Finding the Fourth Proportional to 496.14, 744.34 and 207.78

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Solution

The fourth proportional to 496.14, 744.34 and 207.78 is: 311.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.14 : 744.34 = 207.78 : x
  2. Step 2: Convert to fraction form
    496.14/744.34 = 207.78/x
  3. Step 3: Cross multiply
    496.14x = 744.34 × 207.78
  4. Step 4: Simplify right side
    496.14x = 154,658.97
  5. Step 5: Solve for x
    x = 154,658.97/496.14
  6. Step 6: Final answer
    x = 311.72

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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.