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Finding the Fourth Proportional to 493.35, 680.83 and 272.31

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Solution

The fourth proportional to 493.35, 680.83 and 272.31 is: 375.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.35 : 680.83 = 272.31 : x
  2. Step 2: Convert to fraction form
    493.35/680.83 = 272.31/x
  3. Step 3: Cross multiply
    493.35x = 680.83 × 272.31
  4. Step 4: Simplify right side
    493.35x = 185,396.82
  5. Step 5: Solve for x
    x = 185,396.82/493.35
  6. Step 6: Final answer
    x = 375.79

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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.