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Finding the Fourth Proportional to 300.77, 451.05 and 118.11

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Solution

The fourth proportional to 300.77, 451.05 and 118.11 is: 177.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    300.77 : 451.05 = 118.11 : x
  2. Step 2: Convert to fraction form
    300.77/451.05 = 118.11/x
  3. Step 3: Cross multiply
    300.77x = 451.05 × 118.11
  4. Step 4: Simplify right side
    300.77x = 53,273.52
  5. Step 5: Solve for x
    x = 53,273.52/300.77
  6. Step 6: Final answer
    x = 177.12

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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.