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Finding the Fourth Proportional to 192.63, 266.06 and 143.72

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Solution

The fourth proportional to 192.63, 266.06 and 143.72 is: 198.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.63 : 266.06 = 143.72 : x
  2. Step 2: Convert to fraction form
    192.63/266.06 = 143.72/x
  3. Step 3: Cross multiply
    192.63x = 266.06 × 143.72
  4. Step 4: Simplify right side
    192.63x = 38,239.17
  5. Step 5: Solve for x
    x = 38,239.17/192.63
  6. Step 6: Final answer
    x = 198.51

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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.