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Finding the Fourth Proportional to 348.14, 480.69 and 274.32

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Solution

The fourth proportional to 348.14, 480.69 and 274.32 is: 378.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.14 : 480.69 = 274.32 : x
  2. Step 2: Convert to fraction form
    348.14/480.69 = 274.32/x
  3. Step 3: Cross multiply
    348.14x = 480.69 × 274.32
  4. Step 4: Simplify right side
    348.14x = 131,862.88
  5. Step 5: Solve for x
    x = 131,862.88/348.14
  6. Step 6: Final answer
    x = 378.77

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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.