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Finding the Fourth Proportional to 263.75, 363.99 and 160.25

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Solution

The fourth proportional to 263.75, 363.99 and 160.25 is: 221.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    263.75 : 363.99 = 160.25 : x
  2. Step 2: Convert to fraction form
    263.75/363.99 = 160.25/x
  3. Step 3: Cross multiply
    263.75x = 363.99 × 160.25
  4. Step 4: Simplify right side
    263.75x = 58,329.40
  5. Step 5: Solve for x
    x = 58,329.40/263.75
  6. Step 6: Final answer
    x = 221.15

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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.