Invoking a method whose name is computed

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

Quick question. Assume the following variable values:

my $meth = "prefix_foo"; 
my $x = "foo";
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Perl allows me to do this:

Some::Class->$meth;

but not this:

Some::Class->"prefix_$x";

My workaround at the moment is:

Some::Class->${\("prefix_$x")};

Is there a more straightforward version? Besides the more obvious two-statement version, that is.

my $tmp = "prefix_$x"; Some::Class->"prefix_$tmp";