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Finding the Fourth Proportional to 274.62, 379.01 and 158.22

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Solution

The fourth proportional to 274.62, 379.01 and 158.22 is: 218.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.62 : 379.01 = 158.22 : x
  2. Step 2: Convert to fraction form
    274.62/379.01 = 158.22/x
  3. Step 3: Cross multiply
    274.62x = 379.01 × 158.22
  4. Step 4: Simplify right side
    274.62x = 59,966.96
  5. Step 5: Solve for x
    x = 59,966.96/274.62
  6. Step 6: Final answer
    x = 218.36

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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.