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Finding the Fourth Proportional to 275.76, 380.34 and 192.84

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Solution

The fourth proportional to 275.76, 380.34 and 192.84 is: 265.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    275.76 : 380.34 = 192.84 : x
  2. Step 2: Convert to fraction form
    275.76/380.34 = 192.84/x
  3. Step 3: Cross multiply
    275.76x = 380.34 × 192.84
  4. Step 4: Simplify right side
    275.76x = 73,344.77
  5. Step 5: Solve for x
    x = 73,344.77/275.76
  6. Step 6: Final answer
    x = 265.97

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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.