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Finding the Fourth Proportional to 296.20, 443.58 and 209.32

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Solution

The fourth proportional to 296.20, 443.58 and 209.32 is: 313.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.20 : 443.58 = 209.32 : x
  2. Step 2: Convert to fraction form
    296.20/443.58 = 209.32/x
  3. Step 3: Cross multiply
    296.20x = 443.58 × 209.32
  4. Step 4: Simplify right side
    296.20x = 92,850.17
  5. Step 5: Solve for x
    x = 92,850.17/296.20
  6. Step 6: Final answer
    x = 313.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.