array from matrix equations

i have a matrix that solves 4 unknowns, instead of writing Va1 = ....(see below) four times is there a more efficient way to do this so i have a Va array.

%example.
Vo = [2 3 4 5]% Vo Vectors 
%
Vn = X\Y; % Solves at set of 4 unknowns
%
Va1 = (alpha*Vn(1))+((1-alpha)*Vo(1));
Va2 = (alpha*Vn(2))+((1-alpha)*Vo(2)); 
Va3 = (alpha*Vn(3))+((1-alpha)*Vo(3)); 
Va4 = (alpha*Vn(4))+((1-alpha)*Vo(4));

Answer 1

[Chandrasekhar]

Vo = [2 3 4 5];
Vn - X/Y;

for i = 1:4
Va(i) = (alpha * Vn(i)) + ((1-alpha) * Vo(i));
end