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## Pre-algebra

### Course: Pre-algebra>Unit 9

Lesson 4: Identifying proportional relationships

# Intro to proportional relationships

To know if a relationship is proportional, you should look at the ratios between the two variables. If the ratio is always the same, the relationship is proportional. If the ratio changes, the relationship is not proportional.

## Want to join the conversation?

• What if an odd and even number were in a proportional.
• If an odd and an even were in a proportional like 2:3 it would just be like 4:6
• What is 23%of 80
• (1.) Turn 23% into the decimal .23.
(2.) Multiply .23 and 80.
(3.) .23 X 80 = 18.4
• how is he so good at writing on computer?!?!?!
• This is great.
I've been doing this for about an hour and it's growing on me. I'd like to give a big thanks to the guy who makes these.
• I totally agree
• Can you make this more easier like more understandable?
• Proportions are the same ratios written in different forms. A proportional relationship is states that they are the same. For example, 1/2 and 6/12 have a proportional relationship, which means they are the same.

I hope this helps!!
• Can I add a fraction
• yes ex: 1/4 + 3/4 = 1
• Sometimes I actually try to do the equations first or use hints then I watch the video because there was this one time where I finished the entire unit and didn't watch a single video because i got the hang of it after a while.

• this is boring
• About 4 years ago the comment section was filled with useful questions related to the video, but now all these comments are usless