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Finding the Fourth Proportional to 348.46, 480 and 254.95

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Solution

The fourth proportional to 348.46, 480 and 254.95 is: 351.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.46 : 480 = 254.95 : x
  2. Step 2: Convert to fraction form
    348.46/480 = 254.95/x
  3. Step 3: Cross multiply
    348.46x = 480 × 254.95
  4. Step 4: Simplify right side
    348.46x = 122,376
  5. Step 5: Solve for x
    x = 122,376/348.46
  6. Step 6: Final answer
    x = 351.19

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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.