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Finding the Fourth Proportional to 296.73, 447.31 and 276.90

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Solution

The fourth proportional to 296.73, 447.31 and 276.90 is: 417.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.73 : 447.31 = 276.90 : x
  2. Step 2: Convert to fraction form
    296.73/447.31 = 276.90/x
  3. Step 3: Cross multiply
    296.73x = 447.31 × 276.90
  4. Step 4: Simplify right side
    296.73x = 123,861.26
  5. Step 5: Solve for x
    x = 123,861.26/296.73
  6. Step 6: Final answer
    x = 417.43

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.