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Finding the Fourth Proportional to 345.66, 476.92 and 196.27

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Solution

The fourth proportional to 345.66, 476.92 and 196.27 is: 270.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    345.66 : 476.92 = 196.27 : x
  2. Step 2: Convert to fraction form
    345.66/476.92 = 196.27/x
  3. Step 3: Cross multiply
    345.66x = 476.92 × 196.27
  4. Step 4: Simplify right side
    345.66x = 93,605.09
  5. Step 5: Solve for x
    x = 93,605.09/345.66
  6. Step 6: Final answer
    x = 270.80

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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.