Home / 1,310.31-1,965.55-336.39

Finding the Fourth Proportional to 1,310.31, 1,965.55 and 336.39

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Solution

The fourth proportional to 1,310.31, 1,965.55 and 336.39 is: 504.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310.31 : 1,965.55 = 336.39 : x
  2. Step 2: Convert to fraction form
    1,310.31/1,965.55 = 336.39/x
  3. Step 3: Cross multiply
    1,310.31x = 1,965.55 × 336.39
  4. Step 4: Simplify right side
    1,310.31x = 661,191.36
  5. Step 5: Solve for x
    x = 661,191.36/1,310.31
  6. Step 6: Final answer
    x = 504.61

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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.