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Finding the Fourth Proportional to 301.18, 451.69 and 127.84

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Solution

The fourth proportional to 301.18, 451.69 and 127.84 is: 191.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.18 : 451.69 = 127.84 : x
  2. Step 2: Convert to fraction form
    301.18/451.69 = 127.84/x
  3. Step 3: Cross multiply
    301.18x = 451.69 × 127.84
  4. Step 4: Simplify right side
    301.18x = 57,743.41
  5. Step 5: Solve for x
    x = 57,743.41/301.18
  6. Step 6: Final answer
    x = 191.72

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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.