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Finding the Fourth Proportional to 251.32, 346.95 and 158.11

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Solution

The fourth proportional to 251.32, 346.95 and 158.11 is: 218.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    251.32 : 346.95 = 158.11 : x
  2. Step 2: Convert to fraction form
    251.32/346.95 = 158.11/x
  3. Step 3: Cross multiply
    251.32x = 346.95 × 158.11
  4. Step 4: Simplify right side
    251.32x = 54,856.54
  5. Step 5: Solve for x
    x = 54,856.54/251.32
  6. Step 6: Final answer
    x = 218.27

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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.