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Finding the Fourth Proportional to 348.82, 480.71 and 250.40

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Solution

The fourth proportional to 348.82, 480.71 and 250.40 is: 345.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    348.82 : 480.71 = 250.40 : x
  2. Step 2: Convert to fraction form
    348.82/480.71 = 250.40/x
  3. Step 3: Cross multiply
    348.82x = 480.71 × 250.40
  4. Step 4: Simplify right side
    348.82x = 120,369.73
  5. Step 5: Solve for x
    x = 120,369.73/348.82
  6. Step 6: Final answer
    x = 345.08

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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.