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Finding the Fourth Proportional to 344.85, 475.86 and 197.48

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Solution

The fourth proportional to 344.85, 475.86 and 197.48 is: 272.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    344.85 : 475.86 = 197.48 : x
  2. Step 2: Convert to fraction form
    344.85/475.86 = 197.48/x
  3. Step 3: Cross multiply
    344.85x = 475.86 × 197.48
  4. Step 4: Simplify right side
    344.85x = 93,972.83
  5. Step 5: Solve for x
    x = 93,972.83/344.85
  6. Step 6: Final answer
    x = 272.50

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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.