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Finding the Fourth Proportional to 302.66, 454.20 and 120.09

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Solution

The fourth proportional to 302.66, 454.20 and 120.09 is: 180.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    302.66 : 454.20 = 120.09 : x
  2. Step 2: Convert to fraction form
    302.66/454.20 = 120.09/x
  3. Step 3: Cross multiply
    302.66x = 454.20 × 120.09
  4. Step 4: Simplify right side
    302.66x = 54,546.31
  5. Step 5: Solve for x
    x = 54,546.31/302.66
  6. Step 6: Final answer
    x = 180.22

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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.