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Finding the Fourth Proportional to 274.32, 408.24 and 265.32

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Solution

The fourth proportional to 274.32, 408.24 and 265.32 is: 394.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.32 : 408.24 = 265.32 : x
  2. Step 2: Convert to fraction form
    274.32/408.24 = 265.32/x
  3. Step 3: Cross multiply
    274.32x = 408.24 × 265.32
  4. Step 4: Simplify right side
    274.32x = 108,314.24
  5. Step 5: Solve for x
    x = 108,314.24/274.32
  6. Step 6: Final answer
    x = 394.85

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.