Art & Design Proportions — Ratios & Proportions worksheet for Grade 8.
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Proportions ensure that different parts of an artwork relate correctly to each other, such as making sure the head size matches the body height in a figure drawing by using equivalent ratios.
Write the known ratio as a fraction, set it equal to the new ratio with the missing value, then cross-multiply and solve the resulting equation for the unknown dimension.
Ratios are equivalent when they simplify to the same value, such as 2:4 and 3:6 both reducing to 1:2, which keeps the visual balance identical when applied to design elements.
After calculating, plug the numbers back into the original ratio statements and confirm both sides equal the same value, then visualize whether the artwork would look stretched or balanced.
Convert all measurements to the same unit before setting up the proportion so the ratios compare like quantities and produce accurate scaling results.
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