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Finding the Fourth Proportional to 196.72, 272.23 and 170.49

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Solution

The fourth proportional to 196.72, 272.23 and 170.49 is: 235.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.72 : 272.23 = 170.49 : x
  2. Step 2: Convert to fraction form
    196.72/272.23 = 170.49/x
  3. Step 3: Cross multiply
    196.72x = 272.23 × 170.49
  4. Step 4: Simplify right side
    196.72x = 46,412.49
  5. Step 5: Solve for x
    x = 46,412.49/196.72
  6. Step 6: Final answer
    x = 235.93

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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.