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Finding the Fourth Proportional to 304.74, 456.73 and 131.38

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Solution

The fourth proportional to 304.74, 456.73 and 131.38 is: 196.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    304.74 : 456.73 = 131.38 : x
  2. Step 2: Convert to fraction form
    304.74/456.73 = 131.38/x
  3. Step 3: Cross multiply
    304.74x = 456.73 × 131.38
  4. Step 4: Simplify right side
    304.74x = 60,003.72
  5. Step 5: Solve for x
    x = 60,003.72/304.74
  6. Step 6: Final answer
    x = 196.90

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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.