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Finding the Fourth Proportional to 193.68, 289.66 and 167.76

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Solution

The fourth proportional to 193.68, 289.66 and 167.76 is: 250.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.68 : 289.66 = 167.76 : x
  2. Step 2: Convert to fraction form
    193.68/289.66 = 167.76/x
  3. Step 3: Cross multiply
    193.68x = 289.66 × 167.76
  4. Step 4: Simplify right side
    193.68x = 48,593.36
  5. Step 5: Solve for x
    x = 48,593.36/193.68
  6. Step 6: Final answer
    x = 250.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.