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Finding the Fourth Proportional to 493.82, 680.83 and 404.98

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Solution

The fourth proportional to 493.82, 680.83 and 404.98 is: 558.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.82 : 680.83 = 404.98 : x
  2. Step 2: Convert to fraction form
    493.82/680.83 = 404.98/x
  3. Step 3: Cross multiply
    493.82x = 680.83 × 404.98
  4. Step 4: Simplify right side
    493.82x = 275,719.13
  5. Step 5: Solve for x
    x = 275,719.13/493.82
  6. Step 6: Final answer
    x = 558.34

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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.