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Finding the Fourth Proportional to 371.81, 513.07 and 245.62

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Solution

The fourth proportional to 371.81, 513.07 and 245.62 is: 338.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    371.81 : 513.07 = 245.62 : x
  2. Step 2: Convert to fraction form
    371.81/513.07 = 245.62/x
  3. Step 3: Cross multiply
    371.81x = 513.07 × 245.62
  4. Step 4: Simplify right side
    371.81x = 126,017.39
  5. Step 5: Solve for x
    x = 126,017.39/371.81
  6. Step 6: Final answer
    x = 338.93

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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.