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Finding the Fourth Proportional to 351.49, 485.49 and 263.37

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Solution

The fourth proportional to 351.49, 485.49 and 263.37 is: 363.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.49 : 485.49 = 263.37 : x
  2. Step 2: Convert to fraction form
    351.49/485.49 = 263.37/x
  3. Step 3: Cross multiply
    351.49x = 485.49 × 263.37
  4. Step 4: Simplify right side
    351.49x = 127,860.73
  5. Step 5: Solve for x
    x = 127,860.73/351.49
  6. Step 6: Final answer
    x = 363.77

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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.