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Finding the Fourth Proportional to 193.85, 289.47 and 169.55

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Solution

The fourth proportional to 193.85, 289.47 and 169.55 is: 253.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    193.85 : 289.47 = 169.55 : x
  2. Step 2: Convert to fraction form
    193.85/289.47 = 169.55/x
  3. Step 3: Cross multiply
    193.85x = 289.47 × 169.55
  4. Step 4: Simplify right side
    193.85x = 49,078.19
  5. Step 5: Solve for x
    x = 49,078.19/193.85
  6. Step 6: Final answer
    x = 253.18

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.