Do these ratios form a proportion?

$688 per 606 grams

$734 per 619 grams

To determine if these ratios form a proportion, we need to check if the two ratios are equal to each other.

The first ratio is $688 per 606 grams, which can be written as $\frac{688}{606}$.

The second ratio is $734 per 619 grams, which can be written as $\frac{734}{619}$.

To check if these two ratios are equal, we can set up the equation:

$\frac{688}{606} = \frac{734}{619}$

Cross-multiplying, we get:

$688 \cdot 619 = 734 \cdot 606$

Which simplifies to:

$425,272 = 444,804$

Since $425,272$ is not equal to $444,804$, these ratios do not form a proportion.