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Finding the Fourth Proportional to 196.43, 294.27 and 98.81

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Solution

The fourth proportional to 196.43, 294.27 and 98.81 is: 148.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.43 : 294.27 = 98.81 : x
  2. Step 2: Convert to fraction form
    196.43/294.27 = 98.81/x
  3. Step 3: Cross multiply
    196.43x = 294.27 × 98.81
  4. Step 4: Simplify right side
    196.43x = 29,076.82
  5. Step 5: Solve for x
    x = 29,076.82/196.43
  6. Step 6: Final answer
    x = 148.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.