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Finding the Fourth Proportional to 297.45, 409.99 and 214.43

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Solution

The fourth proportional to 297.45, 409.99 and 214.43 is: 295.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.45 : 409.99 = 214.43 : x
  2. Step 2: Convert to fraction form
    297.45/409.99 = 214.43/x
  3. Step 3: Cross multiply
    297.45x = 409.99 × 214.43
  4. Step 4: Simplify right side
    297.45x = 87,914.16
  5. Step 5: Solve for x
    x = 87,914.16/297.45
  6. Step 6: Final answer
    x = 295.56

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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.