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Finding the Fourth Proportional to 348.13, 480.18 and 248.55

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Solution

The fourth proportional to 348.13, 480.18 and 248.55 is: 342.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.13 : 480.18 = 248.55 : x
  2. Step 2: Convert to fraction form
    348.13/480.18 = 248.55/x
  3. Step 3: Cross multiply
    348.13x = 480.18 × 248.55
  4. Step 4: Simplify right side
    348.13x = 119,348.74
  5. Step 5: Solve for x
    x = 119,348.74/348.13
  6. Step 6: Final answer
    x = 342.83

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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.