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Finding the Fourth Proportional to 348.91, 482.04 and 274.48

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Solution

The fourth proportional to 348.91, 482.04 and 274.48 is: 379.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.91 : 482.04 = 274.48 : x
  2. Step 2: Convert to fraction form
    348.91/482.04 = 274.48/x
  3. Step 3: Cross multiply
    348.91x = 482.04 × 274.48
  4. Step 4: Simplify right side
    348.91x = 132,309.13
  5. Step 5: Solve for x
    x = 132,309.13/348.91
  6. Step 6: Final answer
    x = 379.21

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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.