How do you set up a proportion to find an unknown?

Set up the proportion using known values and the unknown variable. For example, if $$\frac{35}{25} = \frac{x}{30}$$ , you can solve for x.

What is the value of x in $$\frac{23}{x} = \frac{92}{68}$$ ?

Cross-multiply to find $$x = 17$$ .

How do you find 'what number' in a percent problem?

To find 'what number' when given a percent, use the formula: $$\frac{percent}{100} \times x = part$$ .

If 7.5% of what number is 21, how do you find the number?

Set up the equation: $$0.075 \times x = 21$$ . Solve for x to find $$x = 280$$ .

What is cross-multiplication in proportions?

Cross-multiplication is a method used to solve proportions by multiplying the numerator of one fraction by the denominator of the other.

What does it mean if two ratios are equivalent?

If two ratios are equivalent, it means they represent the same relationship between numbers, and their proportions are equal.

How can you check if a proportion is correct?

You can check a proportion by cross-multiplying and verifying if the products are equal.

What is the significance of percent in real-life applications?

Percentages are used in various real-life situations, such as calculating discounts, interest rates, and statistics.

Proportion & Percent Proportion Flashcard Flashcards

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FLASHCARD QUESTION

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What is a proportion?

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