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Finding the Fourth Proportional to 196.40, 293.20 and 195.92

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Solution

The fourth proportional to 196.40, 293.20 and 195.92 is: 292.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.40 : 293.20 = 195.92 : x
  2. Step 2: Convert to fraction form
    196.40/293.20 = 195.92/x
  3. Step 3: Cross multiply
    196.40x = 293.20 × 195.92
  4. Step 4: Simplify right side
    196.40x = 57,443.74
  5. Step 5: Solve for x
    x = 57,443.74/196.40
  6. Step 6: Final answer
    x = 292.48

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.