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Finding the Fourth Proportional to 493.29, 680.74 and 296.80

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Solution

The fourth proportional to 493.29, 680.74 and 296.80 is: 409.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.29 : 680.74 = 296.80 : x
  2. Step 2: Convert to fraction form
    493.29/680.74 = 296.80/x
  3. Step 3: Cross multiply
    493.29x = 680.74 × 296.80
  4. Step 4: Simplify right side
    493.29x = 202,041.19
  5. Step 5: Solve for x
    x = 202,041.19/493.29
  6. Step 6: Final answer
    x = 409.58

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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.