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Finding the Fourth Proportional to 493.18, 680.36 and 296.69

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Solution

The fourth proportional to 493.18, 680.36 and 296.69 is: 409.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.18 : 680.36 = 296.69 : x
  2. Step 2: Convert to fraction form
    493.18/680.36 = 296.69/x
  3. Step 3: Cross multiply
    493.18x = 680.36 × 296.69
  4. Step 4: Simplify right side
    493.18x = 201,856.01
  5. Step 5: Solve for x
    x = 201,856.01/493.18
  6. Step 6: Final answer
    x = 409.29

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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.