Electromagnetic Waves Part 1

A plane electromagnetic wave travels in a medium of relative permeability 1.61 and relative permittivity 6.44. If magnitude of magnetic intensity is 4.5×10−2Am−1 at a point, what will be the approximate magnitude of electric field intensity at that point?
(Given : Permeability of free space µ0=4π×10−7NA−2, speed of light in vacuum c=3×108ms−1)