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Finding the Fourth Proportional to 196.25, 294.22 and 157.71

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Solution

The fourth proportional to 196.25, 294.22 and 157.71 is: 236.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.25 : 294.22 = 157.71 : x
  2. Step 2: Convert to fraction form
    196.25/294.22 = 157.71/x
  3. Step 3: Cross multiply
    196.25x = 294.22 × 157.71
  4. Step 4: Simplify right side
    196.25x = 46,402.74
  5. Step 5: Solve for x
    x = 46,402.74/196.25
  6. Step 6: Final answer
    x = 236.45

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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.