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Finding the Fourth Proportional to 297.72, 410.96 and 199.44

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Solution

The fourth proportional to 297.72, 410.96 and 199.44 is: 275.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.72 : 410.96 = 199.44 : x
  2. Step 2: Convert to fraction form
    297.72/410.96 = 199.44/x
  3. Step 3: Cross multiply
    297.72x = 410.96 × 199.44
  4. Step 4: Simplify right side
    297.72x = 81,960.87
  5. Step 5: Solve for x
    x = 81,960.87/297.72
  6. Step 6: Final answer
    x = 275.30

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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.