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Finding the Fourth Proportional to 274.99, 379.36 and 176.71

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Solution

The fourth proportional to 274.99, 379.36 and 176.71 is: 243.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.99 : 379.36 = 176.71 : x
  2. Step 2: Convert to fraction form
    274.99/379.36 = 176.71/x
  3. Step 3: Cross multiply
    274.99x = 379.36 × 176.71
  4. Step 4: Simplify right side
    274.99x = 67,036.71
  5. Step 5: Solve for x
    x = 67,036.71/274.99
  6. Step 6: Final answer
    x = 243.78

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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.