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Finding the Fourth Proportional to 347.87, 480.48 and 254.47

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Solution

The fourth proportional to 347.87, 480.48 and 254.47 is: 351.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.87 : 480.48 = 254.47 : x
  2. Step 2: Convert to fraction form
    347.87/480.48 = 254.47/x
  3. Step 3: Cross multiply
    347.87x = 480.48 × 254.47
  4. Step 4: Simplify right side
    347.87x = 122,267.75
  5. Step 5: Solve for x
    x = 122,267.75/347.87
  6. Step 6: Final answer
    x = 351.48

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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.