Proportional Relationships
ISEE Middle Level · Flashcards · Recall
ISEE MIDDLE LEVEL · FLASHCARDS
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QUESTION
What is the percent proportion used to find a part of a whole?
QUESTION
What is the equation of a proportional relationship using constant
k
k
k
?
QUESTION
What is the direct method to find a missing value in $ \frac{a}{b}=\frac{x}{d}$?
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ANSWER
x
=
a
d
b
x=\frac{ad}{b}
x
=
b
a
d
(with
b
≠
0
b\ne^0
b
=
0
). Solving for the missing value uses cross-multiplication to equate products, yielding
x
x
x
as the product of
a
a
a
and
d
d
d
divided by
b
b
b
.
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