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Finding the Fourth Proportional to 194.86, 291.60 and 169.48

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Solution

The fourth proportional to 194.86, 291.60 and 169.48 is: 253.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.86 : 291.60 = 169.48 : x
  2. Step 2: Convert to fraction form
    194.86/291.60 = 169.48/x
  3. Step 3: Cross multiply
    194.86x = 291.60 × 169.48
  4. Step 4: Simplify right side
    194.86x = 49,420.37
  5. Step 5: Solve for x
    x = 49,420.37/194.86
  6. Step 6: Final answer
    x = 253.62

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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.