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Finding the Fourth Proportional to 297.04, 445.50 and 80.62

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Solution

The fourth proportional to 297.04, 445.50 and 80.62 is: 120.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.04 : 445.50 = 80.62 : x
  2. Step 2: Convert to fraction form
    297.04/445.50 = 80.62/x
  3. Step 3: Cross multiply
    297.04x = 445.50 × 80.62
  4. Step 4: Simplify right side
    297.04x = 35,916.21
  5. Step 5: Solve for x
    x = 35,916.21/297.04
  6. Step 6: Final answer
    x = 120.91

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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.