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Finding the Fourth Proportional to 274.52, 378.79 and 164.03

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Solution

The fourth proportional to 274.52, 378.79 and 164.03 is: 226.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.52 : 378.79 = 164.03 : x
  2. Step 2: Convert to fraction form
    274.52/378.79 = 164.03/x
  3. Step 3: Cross multiply
    274.52x = 378.79 × 164.03
  4. Step 4: Simplify right side
    274.52x = 62,132.10
  5. Step 5: Solve for x
    x = 62,132.10/274.52
  6. Step 6: Final answer
    x = 226.33

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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.