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Finding the Fourth Proportional to 303.55, 418.40 and 205.27

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Solution

The fourth proportional to 303.55, 418.40 and 205.27 is: 282.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.55 : 418.40 = 205.27 : x
  2. Step 2: Convert to fraction form
    303.55/418.40 = 205.27/x
  3. Step 3: Cross multiply
    303.55x = 418.40 × 205.27
  4. Step 4: Simplify right side
    303.55x = 85,882.88
  5. Step 5: Solve for x
    x = 85,882.88/303.55
  6. Step 6: Final answer
    x = 282.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.