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Finding the Fourth Proportional to 250.82, 346.12 and 140.28

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Solution

The fourth proportional to 250.82, 346.12 and 140.28 is: 193.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    250.82 : 346.12 = 140.28 : x
  2. Step 2: Convert to fraction form
    250.82/346.12 = 140.28/x
  3. Step 3: Cross multiply
    250.82x = 346.12 × 140.28
  4. Step 4: Simplify right side
    250.82x = 48,551.28
  5. Step 5: Solve for x
    x = 48,551.28/250.82
  6. Step 6: Final answer
    x = 193.57

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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.