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Finding the Fourth Proportional to 493.68, 681.38 and 294.56

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Solution

The fourth proportional to 493.68, 681.38 and 294.56 is: 406.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.68 : 681.38 = 294.56 : x
  2. Step 2: Convert to fraction form
    493.68/681.38 = 294.56/x
  3. Step 3: Cross multiply
    493.68x = 681.38 × 294.56
  4. Step 4: Simplify right side
    493.68x = 200,702.41
  5. Step 5: Solve for x
    x = 200,702.41/493.68
  6. Step 6: Final answer
    x = 406.54

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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.