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Finding the Fourth Proportional to 348.64, 480.49 and 243.38

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Solution

The fourth proportional to 348.64, 480.49 and 243.38 is: 335.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.64 : 480.49 = 243.38 : x
  2. Step 2: Convert to fraction form
    348.64/480.49 = 243.38/x
  3. Step 3: Cross multiply
    348.64x = 480.49 × 243.38
  4. Step 4: Simplify right side
    348.64x = 116,941.66
  5. Step 5: Solve for x
    x = 116,941.66/348.64
  6. Step 6: Final answer
    x = 335.42

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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.