I don’t use algebra everyday so when a problem happens to come up I have to stop and think for a minute. I thought maybe this refresher and my example might be useful to others so I am sharing my actual math problem.
As I have mentioned before, I use PowerPoint to create images for this blog and I wanted to start creating them at the size they will appear when posted. This way they will be the right size in RSS feed, I won’t have a second step of resizing, and hopefully it will speed up my site (because I have been posting them bigger than they need to be). I had just created this image and the PowerPoint slide dimensions were 5 inches wide by 15 inches tall. When I saved the slide as a PNG it automatically sized it at 480 dpi wide. I want the large images on my blog to be 600 dpi wide. I know that if I size my slide 5 inches wide I will get 480 dpi wide output. So, if I want 600 dpi wide output I need to size my PowerPoint slides to be 6.25 inches wide. I reached this conclusion with cross multiplication. See step by step above!
Math is like magic sometimes! How do you feel about math? Please share!