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Finding the Fourth Proportional to 193.29, 266.79 and 118.63

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Solution

The fourth proportional to 193.29, 266.79 and 118.63 is: 163.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.29 : 266.79 = 118.63 : x
  2. Step 2: Convert to fraction form
    193.29/266.79 = 118.63/x
  3. Step 3: Cross multiply
    193.29x = 266.79 × 118.63
  4. Step 4: Simplify right side
    193.29x = 31,647.37
  5. Step 5: Solve for x
    x = 31,647.37/193.29
  6. Step 6: Final answer
    x = 163.73

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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.