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Finding the Fourth Proportional to 274.97, 411.99 and 193.64

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Solution

The fourth proportional to 274.97, 411.99 and 193.64 is: 290.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.97 : 411.99 = 193.64 : x
  2. Step 2: Convert to fraction form
    274.97/411.99 = 193.64/x
  3. Step 3: Cross multiply
    274.97x = 411.99 × 193.64
  4. Step 4: Simplify right side
    274.97x = 79,774.72
  5. Step 5: Solve for x
    x = 79,774.72/274.97
  6. Step 6: Final answer
    x = 290.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.