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Finding the Fourth Proportional to 274.51, 411.97 and 238.87

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Solution

The fourth proportional to 274.51, 411.97 and 238.87 is: 358.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    274.51 : 411.97 = 238.87 : x
  2. Step 2: Convert to fraction form
    274.51/411.97 = 238.87/x
  3. Step 3: Cross multiply
    274.51x = 411.97 × 238.87
  4. Step 4: Simplify right side
    274.51x = 98,407.27
  5. Step 5: Solve for x
    x = 98,407.27/274.51
  6. Step 6: Final answer
    x = 358.48

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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.