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Finding the Fourth Proportional to 193.24, 266.67 and 105.91

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Solution

The fourth proportional to 193.24, 266.67 and 105.91 is: 146.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.24 : 266.67 = 105.91 : x
  2. Step 2: Convert to fraction form
    193.24/266.67 = 105.91/x
  3. Step 3: Cross multiply
    193.24x = 266.67 × 105.91
  4. Step 4: Simplify right side
    193.24x = 28,243.02
  5. Step 5: Solve for x
    x = 28,243.02/193.24
  6. Step 6: Final answer
    x = 146.16

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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.