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Finding the Fourth Proportional to 300.21, 412.95 and 250.39

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Solution

The fourth proportional to 300.21, 412.95 and 250.39 is: 344.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.21 : 412.95 = 250.39 : x
  2. Step 2: Convert to fraction form
    300.21/412.95 = 250.39/x
  3. Step 3: Cross multiply
    300.21x = 412.95 × 250.39
  4. Step 4: Simplify right side
    300.21x = 103,398.60
  5. Step 5: Solve for x
    x = 103,398.60/300.21
  6. Step 6: Final answer
    x = 344.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.