Question

solving a proportion
the proportion used to find the average number of trout you would expect to live in the pond is
\\(\frac{7}{20} = \frac{x}{400}\\).
solve the proportion to find the expected number of trout in the population.
the expected number of trout in the population is
\\(\square\\).

Explanation:

Step1: Cross-multiply to eliminate fractions

$$7 \times 400 = 20 \times x$$

Step2: Calculate left-hand side product

$$2800 = 20x$$

Step3: Isolate x by dividing by 20

$$x = \frac{2800}{20}$$

Step4: Compute the final value

$$x = 140$$

Answer:

140