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Finding the Fourth Proportional to 274.76, 379.17 and 150.42

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Solution

The fourth proportional to 274.76, 379.17 and 150.42 is: 207.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.76 : 379.17 = 150.42 : x
  2. Step 2: Convert to fraction form
    274.76/379.17 = 150.42/x
  3. Step 3: Cross multiply
    274.76x = 379.17 × 150.42
  4. Step 4: Simplify right side
    274.76x = 57,032.77
  5. Step 5: Solve for x
    x = 57,032.77/274.76
  6. Step 6: Final answer
    x = 207.57

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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.