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Finding the Fourth Proportional to 274.84, 379.28 and 176.70

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Solution

The fourth proportional to 274.84, 379.28 and 176.70 is: 243.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.84 : 379.28 = 176.70 : x
  2. Step 2: Convert to fraction form
    274.84/379.28 = 176.70/x
  3. Step 3: Cross multiply
    274.84x = 379.28 × 176.70
  4. Step 4: Simplify right side
    274.84x = 67,018.78
  5. Step 5: Solve for x
    x = 67,018.78/274.84
  6. Step 6: Final answer
    x = 243.85

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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.