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Finding the Fourth Proportional to 296.20, 444.32 and 103.80

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Solution

The fourth proportional to 296.20, 444.32 and 103.80 is: 155.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    296.20 : 444.32 = 103.80 : x
  2. Step 2: Convert to fraction form
    296.20/444.32 = 103.80/x
  3. Step 3: Cross multiply
    296.20x = 444.32 × 103.80
  4. Step 4: Simplify right side
    296.20x = 46,120.42
  5. Step 5: Solve for x
    x = 46,120.42/296.20
  6. Step 6: Final answer
    x = 155.71

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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.