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Finding the Fourth Proportional to 303.86, 454.74 and 248.38

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Solution

The fourth proportional to 303.86, 454.74 and 248.38 is: 371.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    303.86 : 454.74 = 248.38 : x
  2. Step 2: Convert to fraction form
    303.86/454.74 = 248.38/x
  3. Step 3: Cross multiply
    303.86x = 454.74 × 248.38
  4. Step 4: Simplify right side
    303.86x = 112,948.32
  5. Step 5: Solve for x
    x = 112,948.32/303.86
  6. Step 6: Final answer
    x = 371.71

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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.