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Finding the Fourth Proportional to 351, 484.38 and 195.78

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Solution

The fourth proportional to 351, 484.38 and 195.78 is: 270.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    351 : 484.38 = 195.78 : x
  2. Step 2: Convert to fraction form
    351/484.38 = 195.78/x
  3. Step 3: Cross multiply
    351x = 484.38 × 195.78
  4. Step 4: Simplify right side
    351x = 94,831.92
  5. Step 5: Solve for x
    x = 94,831.92/351
  6. Step 6: Final answer
    x = 270.18

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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.