Home / 1,310.35-1,965.33-336.40

Finding the Fourth Proportional to 1,310.35, 1,965.33 and 336.40

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Solution

The fourth proportional to 1,310.35, 1,965.33 and 336.40 is: 504.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,310.35 : 1,965.33 = 336.40 : x
  2. Step 2: Convert to fraction form
    1,310.35/1,965.33 = 336.40/x
  3. Step 3: Cross multiply
    1,310.35x = 1,965.33 × 336.40
  4. Step 4: Simplify right side
    1,310.35x = 661,137.01
  5. Step 5: Solve for x
    x = 661,137.01/1,310.35
  6. Step 6: Final answer
    x = 504.55

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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.