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Finding the Fourth Proportional to 193.49, 266.99 and 114.78

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Solution

The fourth proportional to 193.49, 266.99 and 114.78 is: 158.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.49 : 266.99 = 114.78 : x
  2. Step 2: Convert to fraction form
    193.49/266.99 = 114.78/x
  3. Step 3: Cross multiply
    193.49x = 266.99 × 114.78
  4. Step 4: Simplify right side
    193.49x = 30,645.11
  5. Step 5: Solve for x
    x = 30,645.11/193.49
  6. Step 6: Final answer
    x = 158.38

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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.