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Finding the Fourth Proportional to 348.18, 480.46 and 190.80

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Solution

The fourth proportional to 348.18, 480.46 and 190.80 is: 263.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.18 : 480.46 = 190.80 : x
  2. Step 2: Convert to fraction form
    348.18/480.46 = 190.80/x
  3. Step 3: Cross multiply
    348.18x = 480.46 × 190.80
  4. Step 4: Simplify right side
    348.18x = 91,671.77
  5. Step 5: Solve for x
    x = 91,671.77/348.18
  6. Step 6: Final answer
    x = 263.29

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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.