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Finding the Fourth Proportional to 344.30, 475.16 and 196.90

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Solution

The fourth proportional to 344.30, 475.16 and 196.90 is: 271.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.30 : 475.16 = 196.90 : x
  2. Step 2: Convert to fraction form
    344.30/475.16 = 196.90/x
  3. Step 3: Cross multiply
    344.30x = 475.16 × 196.90
  4. Step 4: Simplify right side
    344.30x = 93,558.02
  5. Step 5: Solve for x
    x = 93,558.02/344.30
  6. Step 6: Final answer
    x = 271.74

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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.