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Finding the Fourth Proportional to 196.93, 271.88 and 157.46

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Solution

The fourth proportional to 196.93, 271.88 and 157.46 is: 217.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.93 : 271.88 = 157.46 : x
  2. Step 2: Convert to fraction form
    196.93/271.88 = 157.46/x
  3. Step 3: Cross multiply
    196.93x = 271.88 × 157.46
  4. Step 4: Simplify right side
    196.93x = 42,809.44
  5. Step 5: Solve for x
    x = 42,809.44/196.93
  6. Step 6: Final answer
    x = 217.38

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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.