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Finding the Fourth Proportional to 493.10, 680.28 and 303.98

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Solution

The fourth proportional to 493.10, 680.28 and 303.98 is: 419.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.10 : 680.28 = 303.98 : x
  2. Step 2: Convert to fraction form
    493.10/680.28 = 303.98/x
  3. Step 3: Cross multiply
    493.10x = 680.28 × 303.98
  4. Step 4: Simplify right side
    493.10x = 206,791.51
  5. Step 5: Solve for x
    x = 206,791.51/493.10
  6. Step 6: Final answer
    x = 419.37

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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.