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Finding the Fourth Proportional to 376.72, 519.14 and 243.68

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Solution

The fourth proportional to 376.72, 519.14 and 243.68 is: 335.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    376.72 : 519.14 = 243.68 : x
  2. Step 2: Convert to fraction form
    376.72/519.14 = 243.68/x
  3. Step 3: Cross multiply
    376.72x = 519.14 × 243.68
  4. Step 4: Simplify right side
    376.72x = 126,502.05
  5. Step 5: Solve for x
    x = 126,502.05/376.72
  6. Step 6: Final answer
    x = 335.80

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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.