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Finding the Fourth Proportional to 414.80, 572.44 and 274.96

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Solution

The fourth proportional to 414.80, 572.44 and 274.96 is: 379.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    414.80 : 572.44 = 274.96 : x
  2. Step 2: Convert to fraction form
    414.80/572.44 = 274.96/x
  3. Step 3: Cross multiply
    414.80x = 572.44 × 274.96
  4. Step 4: Simplify right side
    414.80x = 157,398.10
  5. Step 5: Solve for x
    x = 157,398.10/414.80
  6. Step 6: Final answer
    x = 379.46

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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.