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Finding the Fourth Proportional to 274.75, 379.12 and 162.74

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Solution

The fourth proportional to 274.75, 379.12 and 162.74 is: 224.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.75 : 379.12 = 162.74 : x
  2. Step 2: Convert to fraction form
    274.75/379.12 = 162.74/x
  3. Step 3: Cross multiply
    274.75x = 379.12 × 162.74
  4. Step 4: Simplify right side
    274.75x = 61,695.28
  5. Step 5: Solve for x
    x = 61,695.28/274.75
  6. Step 6: Final answer
    x = 224.55

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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.