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Finding the Fourth Proportional to 351.32, 484.81 and 191.80

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Solution

The fourth proportional to 351.32, 484.81 and 191.80 is: 264.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.32 : 484.81 = 191.80 : x
  2. Step 2: Convert to fraction form
    351.32/484.81 = 191.80/x
  3. Step 3: Cross multiply
    351.32x = 484.81 × 191.80
  4. Step 4: Simplify right side
    351.32x = 92,984.87
  5. Step 5: Solve for x
    x = 92,984.87/351.32
  6. Step 6: Final answer
    x = 264.68

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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.