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Finding the Fourth Proportional to 196.16, 271.76 and 192.32

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Solution

The fourth proportional to 196.16, 271.76 and 192.32 is: 266.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    196.16 : 271.76 = 192.32 : x
  2. Step 2: Convert to fraction form
    196.16/271.76 = 192.32/x
  3. Step 3: Cross multiply
    196.16x = 271.76 × 192.32
  4. Step 4: Simplify right side
    196.16x = 52,264.88
  5. Step 5: Solve for x
    x = 52,264.88/196.16
  6. Step 6: Final answer
    x = 266.44

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.