yum install mysql-gui-tools
...should do the trick.
What confuses me, is that mysql-gui-tools only mentions mysql-administrator when I do an rpm -qi on it, but it doesn't mention anything about mysql-query-browser. Also, mysql-administrator is listed as a separate package.
I have both "administrator" and "query-browser", but for the life of me, I can't remember how I managed to install both of them. Maybe:
yum install mysql-gui-tools mysql-administrator mysql-query-browser