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Finding the Fourth Proportional to 274.20, 378.06 and 235.32

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Solution

The fourth proportional to 274.20, 378.06 and 235.32 is: 324.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.20 : 378.06 = 235.32 : x
  2. Step 2: Convert to fraction form
    274.20/378.06 = 235.32/x
  3. Step 3: Cross multiply
    274.20x = 378.06 × 235.32
  4. Step 4: Simplify right side
    274.20x = 88,965.08
  5. Step 5: Solve for x
    x = 88,965.08/274.20
  6. Step 6: Final answer
    x = 324.45

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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.