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Finding the Fourth Proportional to 250.62, 374.46 and 220.55

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Solution

The fourth proportional to 250.62, 374.46 and 220.55 is: 329.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.62 : 374.46 = 220.55 : x
  2. Step 2: Convert to fraction form
    250.62/374.46 = 220.55/x
  3. Step 3: Cross multiply
    250.62x = 374.46 × 220.55
  4. Step 4: Simplify right side
    250.62x = 82,585.28
  5. Step 5: Solve for x
    x = 82,585.28/250.62
  6. Step 6: Final answer
    x = 329.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.