A grating is illuminated with light from a red laser ( = 630 nm), producing a diffraction

A grating is illuminated with light from a red laser (λ = 630 nm), producing a diffraction pattern on a screen 3.0 m away in which the first diffraction maximum is spaced 0.55 m from the central diffraction spot. A second laser with an unknown wavelength is then used with the same grating and screen, and the first diffraction maximum is found to be 0.45 m from the central diffraction spot. What is the wavelength of the second laser?