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Finding the Fourth Proportional to 192.89, 266.18 and 151.55

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Solution

The fourth proportional to 192.89, 266.18 and 151.55 is: 209.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.89 : 266.18 = 151.55 : x
  2. Step 2: Convert to fraction form
    192.89/266.18 = 151.55/x
  3. Step 3: Cross multiply
    192.89x = 266.18 × 151.55
  4. Step 4: Simplify right side
    192.89x = 40,338.49
  5. Step 5: Solve for x
    x = 40,338.49/192.89
  6. Step 6: Final answer
    x = 209.12

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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.