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Finding the Fourth Proportional to 193.94, 267.61 and 111.05

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Solution

The fourth proportional to 193.94, 267.61 and 111.05 is: 153.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.94 : 267.61 = 111.05 : x
  2. Step 2: Convert to fraction form
    193.94/267.61 = 111.05/x
  3. Step 3: Cross multiply
    193.94x = 267.61 × 111.05
  4. Step 4: Simplify right side
    193.94x = 29,718.76
  5. Step 5: Solve for x
    x = 29,718.76/193.94
  6. Step 6: Final answer
    x = 153.23

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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.