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Finding the Fourth Proportional to 297.84, 408.39 and 270.12

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Solution

The fourth proportional to 297.84, 408.39 and 270.12 is: 370.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.84 : 408.39 = 270.12 : x
  2. Step 2: Convert to fraction form
    297.84/408.39 = 270.12/x
  3. Step 3: Cross multiply
    297.84x = 408.39 × 270.12
  4. Step 4: Simplify right side
    297.84x = 110,314.31
  5. Step 5: Solve for x
    x = 110,314.31/297.84
  6. Step 6: Final answer
    x = 370.38

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.