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Finding the Fourth Proportional to 348.53, 480.88 and 208.59

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Solution

The fourth proportional to 348.53, 480.88 and 208.59 is: 287.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.53 : 480.88 = 208.59 : x
  2. Step 2: Convert to fraction form
    348.53/480.88 = 208.59/x
  3. Step 3: Cross multiply
    348.53x = 480.88 × 208.59
  4. Step 4: Simplify right side
    348.53x = 100,306.76
  5. Step 5: Solve for x
    x = 100,306.76/348.53
  6. Step 6: Final answer
    x = 287.80

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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.