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Finding the Fourth Proportional to 301.02, 451.44 and 84.54

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Solution

The fourth proportional to 301.02, 451.44 and 84.54 is: 126.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.02 : 451.44 = 84.54 : x
  2. Step 2: Convert to fraction form
    301.02/451.44 = 84.54/x
  3. Step 3: Cross multiply
    301.02x = 451.44 × 84.54
  4. Step 4: Simplify right side
    301.02x = 38,164.74
  5. Step 5: Solve for x
    x = 38,164.74/301.02
  6. Step 6: Final answer
    x = 126.78

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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.