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Finding the Fourth Proportional to 297.92, 411.72 and 254.72

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Solution

The fourth proportional to 297.92, 411.72 and 254.72 is: 352.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.92 : 411.72 = 254.72 : x
  2. Step 2: Convert to fraction form
    297.92/411.72 = 254.72/x
  3. Step 3: Cross multiply
    297.92x = 411.72 × 254.72
  4. Step 4: Simplify right side
    297.92x = 104,873.32
  5. Step 5: Solve for x
    x = 104,873.32/297.92
  6. Step 6: Final answer
    x = 352.02

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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.