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Finding the Fourth Proportional to 251.28, 346.86 and 192.29

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Solution

The fourth proportional to 251.28, 346.86 and 192.29 is: 265.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.28 : 346.86 = 192.29 : x
  2. Step 2: Convert to fraction form
    251.28/346.86 = 192.29/x
  3. Step 3: Cross multiply
    251.28x = 346.86 × 192.29
  4. Step 4: Simplify right side
    251.28x = 66,695.98
  5. Step 5: Solve for x
    x = 66,695.98/251.28
  6. Step 6: Final answer
    x = 265.42

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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.