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Finding the Fourth Proportional to 302.09, 451.75 and 225.11

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Solution

The fourth proportional to 302.09, 451.75 and 225.11 is: 336.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.09 : 451.75 = 225.11 : x
  2. Step 2: Convert to fraction form
    302.09/451.75 = 225.11/x
  3. Step 3: Cross multiply
    302.09x = 451.75 × 225.11
  4. Step 4: Simplify right side
    302.09x = 101,691.18
  5. Step 5: Solve for x
    x = 101,691.18/302.09
  6. Step 6: Final answer
    x = 336.63

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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.