dimension_ratio_view.xml

<ImageView
    android:layout_width="match_parent"
    android:layout_height="0dp"
    app:layout_constraintDimensionRatio="5:2" />

<ImageView
    android:layout_width="0dp"
    android:layout_height="0dp"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintDimensionRatio="H,5:2" />