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Finding the Fourth Proportional to 301.17, 451.69 and 127.96

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Solution

The fourth proportional to 301.17, 451.69 and 127.96 is: 191.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.17 : 451.69 = 127.96 : x
  2. Step 2: Convert to fraction form
    301.17/451.69 = 127.96/x
  3. Step 3: Cross multiply
    301.17x = 451.69 × 127.96
  4. Step 4: Simplify right side
    301.17x = 57,795.99
  5. Step 5: Solve for x
    x = 57,795.99/301.17
  6. Step 6: Final answer
    x = 191.91

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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.