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Finding the Fourth Proportional to 297.74, 410.78 and 179.65

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Solution

The fourth proportional to 297.74, 410.78 and 179.65 is: 247.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.74 : 410.78 = 179.65 : x
  2. Step 2: Convert to fraction form
    297.74/410.78 = 179.65/x
  3. Step 3: Cross multiply
    297.74x = 410.78 × 179.65
  4. Step 4: Simplify right side
    297.74x = 73,797.59
  5. Step 5: Solve for x
    x = 73,797.59/297.74
  6. Step 6: Final answer
    x = 247.86

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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.