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Finding the Fourth Proportional to 192.69, 266.02 and 143.69

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Solution

The fourth proportional to 192.69, 266.02 and 143.69 is: 198.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.69 : 266.02 = 143.69 : x
  2. Step 2: Convert to fraction form
    192.69/266.02 = 143.69/x
  3. Step 3: Cross multiply
    192.69x = 266.02 × 143.69
  4. Step 4: Simplify right side
    192.69x = 38,222.72
  5. Step 5: Solve for x
    x = 38,222.72/192.69
  6. Step 6: Final answer
    x = 198.36

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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.