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Finding the Fourth Proportional to 274.74, 379.19 and 169.80

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Solution

The fourth proportional to 274.74, 379.19 and 169.80 is: 234.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.74 : 379.19 = 169.80 : x
  2. Step 2: Convert to fraction form
    274.74/379.19 = 169.80/x
  3. Step 3: Cross multiply
    274.74x = 379.19 × 169.80
  4. Step 4: Simplify right side
    274.74x = 64,384.63
  5. Step 5: Solve for x
    x = 64,384.63/274.74
  6. Step 6: Final answer
    x = 234.35

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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.