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Finding the Fourth Proportional to 274.77, 379.19 and 176.70

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Solution

The fourth proportional to 274.77, 379.19 and 176.70 is: 243.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.77 : 379.19 = 176.70 : x
  2. Step 2: Convert to fraction form
    274.77/379.19 = 176.70/x
  3. Step 3: Cross multiply
    274.77x = 379.19 × 176.70
  4. Step 4: Simplify right side
    274.77x = 67,000.57
  5. Step 5: Solve for x
    x = 67,000.57/274.77
  6. Step 6: Final answer
    x = 243.84

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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.