Match the size of an image

Unity Engine
1

I have 2 images: SourceImage and TargetImage. I want the width of TargetImage to match the width of SourceImage.

This is the RectTransform of the source image:
5604376--579781--Screen Shot 2020-03-17 at 1.10.36 PM (1).png

I tried this but it sets the width to 0

5604376--579790--Screen Shot 2020-03-18 at 5.05.11 PM.png
5604376--579790--Screen Shot 2020-03-18 at 5.05.11 PM.png725×150 18.1 KB

I also tried this but the size is wrong:
5604376--579787--Screen Shot 2020-03-18 at 5.05.25 PM.png

How can I get the width of TargetImage to match the width of SourceImage?

2

Did you mean to get the RectTransform size or the Image size? If the latter, you should be getting the Image component.
It looks like your rect is size 0?

3

Yes. It is zero.

I want to get the current size of the SourceImage related to the current screen resolution. The SourceImage changes size because of the screen size.