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Finding the Fourth Proportional to 297.28, 409.80 and 214.24

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Solution

The fourth proportional to 297.28, 409.80 and 214.24 is: 295.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.28 : 409.80 = 214.24 : x
  2. Step 2: Convert to fraction form
    297.28/409.80 = 214.24/x
  3. Step 3: Cross multiply
    297.28x = 409.80 × 214.24
  4. Step 4: Simplify right side
    297.28x = 87,795.55
  5. Step 5: Solve for x
    x = 87,795.55/297.28
  6. Step 6: Final answer
    x = 295.33

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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.