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Finding the Fourth Proportional to 274.37, 378 and 195.53

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Solution

The fourth proportional to 274.37, 378 and 195.53 is: 269.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.37 : 378 = 195.53 : x
  2. Step 2: Convert to fraction form
    274.37/378 = 195.53/x
  3. Step 3: Cross multiply
    274.37x = 378 × 195.53
  4. Step 4: Simplify right side
    274.37x = 73,908.45
  5. Step 5: Solve for x
    x = 73,908.45/274.37
  6. Step 6: Final answer
    x = 269.38

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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.