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Finding the Fourth Proportional to 203.99, 305.91 and 127.04

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Solution

The fourth proportional to 203.99, 305.91 and 127.04 is: 190.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.99 : 305.91 = 127.04 : x
  2. Step 2: Convert to fraction form
    203.99/305.91 = 127.04/x
  3. Step 3: Cross multiply
    203.99x = 305.91 × 127.04
  4. Step 4: Simplify right side
    203.99x = 38,861.28
  5. Step 5: Solve for x
    x = 38,861.28/203.99
  6. Step 6: Final answer
    x = 190.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.