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Finding the Fourth Proportional to 348.10, 479.83 and 274.29

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Solution

The fourth proportional to 348.10, 479.83 and 274.29 is: 378.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.10 : 479.83 = 274.29 : x
  2. Step 2: Convert to fraction form
    348.10/479.83 = 274.29/x
  3. Step 3: Cross multiply
    348.10x = 479.83 × 274.29
  4. Step 4: Simplify right side
    348.10x = 131,612.57
  5. Step 5: Solve for x
    x = 131,612.57/348.10
  6. Step 6: Final answer
    x = 378.09

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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.