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Finding the Fourth Proportional to 379.72, 523.65 and 246.80

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Solution

The fourth proportional to 379.72, 523.65 and 246.80 is: 340.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    379.72 : 523.65 = 246.80 : x
  2. Step 2: Convert to fraction form
    379.72/523.65 = 246.80/x
  3. Step 3: Cross multiply
    379.72x = 523.65 × 246.80
  4. Step 4: Simplify right side
    379.72x = 129,234.20
  5. Step 5: Solve for x
    x = 129,234.20/379.72
  6. Step 6: Final answer
    x = 340.34

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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.