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Finding the Fourth Proportional to 294.93, 406.64 and 196.47

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Solution

The fourth proportional to 294.93, 406.64 and 196.47 is: 270.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.93 : 406.64 = 196.47 : x
  2. Step 2: Convert to fraction form
    294.93/406.64 = 196.47/x
  3. Step 3: Cross multiply
    294.93x = 406.64 × 196.47
  4. Step 4: Simplify right side
    294.93x = 79,891.58
  5. Step 5: Solve for x
    x = 79,891.58/294.93
  6. Step 6: Final answer
    x = 270.88

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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.