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Finding the Fourth Proportional to 274.71, 411.87 and 92.08

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Solution

The fourth proportional to 274.71, 411.87 and 92.08 is: 138.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.71 : 411.87 = 92.08 : x
  2. Step 2: Convert to fraction form
    274.71/411.87 = 92.08/x
  3. Step 3: Cross multiply
    274.71x = 411.87 × 92.08
  4. Step 4: Simplify right side
    274.71x = 37,924.99
  5. Step 5: Solve for x
    x = 37,924.99/274.71
  6. Step 6: Final answer
    x = 138.05

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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.