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Finding the Fourth Proportional to 296.96, 409.60 and 219.52

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Solution

The fourth proportional to 296.96, 409.60 and 219.52 is: 302.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.96 : 409.60 = 219.52 : x
  2. Step 2: Convert to fraction form
    296.96/409.60 = 219.52/x
  3. Step 3: Cross multiply
    296.96x = 409.60 × 219.52
  4. Step 4: Simplify right side
    296.96x = 89,915.39
  5. Step 5: Solve for x
    x = 89,915.39/296.96
  6. Step 6: Final answer
    x = 302.79

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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.