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Finding the Fourth Proportional to 353.27, 486.32 and 303.86

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Solution

The fourth proportional to 353.27, 486.32 and 303.86 is: 418.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    353.27 : 486.32 = 303.86 : x
  2. Step 2: Convert to fraction form
    353.27/486.32 = 303.86/x
  3. Step 3: Cross multiply
    353.27x = 486.32 × 303.86
  4. Step 4: Simplify right side
    353.27x = 147,769.24
  5. Step 5: Solve for x
    x = 147,769.24/353.27
  6. Step 6: Final answer
    x = 418.30

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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.