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Finding the Fourth Proportional to 250.75, 374.21 and 223.41

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Solution

The fourth proportional to 250.75, 374.21 and 223.41 is: 333.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.75 : 374.21 = 223.41 : x
  2. Step 2: Convert to fraction form
    250.75/374.21 = 223.41/x
  3. Step 3: Cross multiply
    250.75x = 374.21 × 223.41
  4. Step 4: Simplify right side
    250.75x = 83,601.14
  5. Step 5: Solve for x
    x = 83,601.14/250.75
  6. Step 6: Final answer
    x = 333.40

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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.