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Finding the Fourth Proportional to 495.69, 743.72 and 331.80

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Solution

The fourth proportional to 495.69, 743.72 and 331.80 is: 497.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.69 : 743.72 = 331.80 : x
  2. Step 2: Convert to fraction form
    495.69/743.72 = 331.80/x
  3. Step 3: Cross multiply
    495.69x = 743.72 × 331.80
  4. Step 4: Simplify right side
    495.69x = 246,764.64
  5. Step 5: Solve for x
    x = 246,764.64/495.69
  6. Step 6: Final answer
    x = 497.82

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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.