Yes. Most of webmaster and hosting providers recommend that you spend the money to get a dedicated IP that hosts only your own domain names. This has several reasons:

Search engines might use it in their algorithms: Google will tell you that it doesn’t matter whether your website has a dedicated [...]

IP addresses are the addresses under which search engines find websites on the Internet. Domain names are only an add-on to the IP addresses.
IP addresses can be shared or dedicated. If you use a shared IP address, there will be many websites that use the same IP address as your website.
If you use a dedicated [...]