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Finding the Fourth Proportional to 1,331.07, 1,996.63 and 465.41

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Solution

The fourth proportional to 1,331.07, 1,996.63 and 465.41 is: 698.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.07 : 1,996.63 = 465.41 : x
  2. Step 2: Convert to fraction form
    1,331.07/1,996.63 = 465.41/x
  3. Step 3: Cross multiply
    1,331.07x = 1,996.63 × 465.41
  4. Step 4: Simplify right side
    1,331.07x = 929,251.57
  5. Step 5: Solve for x
    x = 929,251.57/1,331.07
  6. Step 6: Final answer
    x = 698.12

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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.