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Finding the Fourth Proportional to 496.26, 743.76 and 279.96

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Solution

The fourth proportional to 496.26, 743.76 and 279.96 is: 419.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    496.26 : 743.76 = 279.96 : x
  2. Step 2: Convert to fraction form
    496.26/743.76 = 279.96/x
  3. Step 3: Cross multiply
    496.26x = 743.76 × 279.96
  4. Step 4: Simplify right side
    496.26x = 208,223.05
  5. Step 5: Solve for x
    x = 208,223.05/496.26
  6. Step 6: Final answer
    x = 419.58

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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.