Home / 1,331.10-1,996.41-357.12

Finding the Fourth Proportional to 1,331.10, 1,996.41 and 357.12

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Solution

The fourth proportional to 1,331.10, 1,996.41 and 357.12 is: 535.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,331.10 : 1,996.41 = 357.12 : x
  2. Step 2: Convert to fraction form
    1,331.10/1,996.41 = 357.12/x
  3. Step 3: Cross multiply
    1,331.10x = 1,996.41 × 357.12
  4. Step 4: Simplify right side
    1,331.10x = 712,959.28
  5. Step 5: Solve for x
    x = 712,959.28/1,331.10
  6. Step 6: Final answer
    x = 535.62

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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.