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Finding the Fourth Proportional to 341.75, 512.22 and 146.69

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Solution

The fourth proportional to 341.75, 512.22 and 146.69 is: 219.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    341.75 : 512.22 = 146.69 : x
  2. Step 2: Convert to fraction form
    341.75/512.22 = 146.69/x
  3. Step 3: Cross multiply
    341.75x = 512.22 × 146.69
  4. Step 4: Simplify right side
    341.75x = 75,137.55
  5. Step 5: Solve for x
    x = 75,137.55/341.75
  6. Step 6: Final answer
    x = 219.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.