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Finding the Fourth Proportional to 193.36, 291.52 and 161.68

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Solution

The fourth proportional to 193.36, 291.52 and 161.68 is: 243.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.36 : 291.52 = 161.68 : x
  2. Step 2: Convert to fraction form
    193.36/291.52 = 161.68/x
  3. Step 3: Cross multiply
    193.36x = 291.52 × 161.68
  4. Step 4: Simplify right side
    193.36x = 47,132.95
  5. Step 5: Solve for x
    x = 47,132.95/193.36
  6. Step 6: Final answer
    x = 243.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.