Render.Transformation scaling with one animation

I have

Dim ScaleUpY As New DoubleAnimation()
Dim ScaleUpX As New DoubleAnimation()
ScaleUpY.Duration = New Duration(TimeSpan.FromSeconds(0.2))
ScaleUpX.Duration = New Duration(TimeSpan.FromSeconds(0.2))
ScaleUpY.To = 154 'in pixels
ScaleUpX.To = 110 'in pixels
imge.BeginAnimation(Image.HeightProperty, ScaleUpY)
imge.BeginAnimation(Image.WidthProperty, ScaleUpX)

Instead of this, I want something like: 

Dim ScaleUp As New ScaleTransform()
ScaleUp.Duration = New Duration(TimeSpan.FromSeconds(0.2))
ScaleY.To = 1.5 'in ratio
ScaleX.To = 1.5 'in ratio
imge.BeginAnimation(Image.RenderTransformProperty, ScaleUp)

The aim is to reduce two animation to one for a single effect. But I don't know the correct expression for this.