Die Verhältnisse 10 : 19 : 43 : 78 kommen den Verhältnissen 10 : 20 : 40 : 80 oder 1 : 2 : 4 : 8 so nahe, dass letztere ohne Zweifel die richtigen Werthe darstellen.
The proportion 10 : 19 : 43 : 78 is so close to the proportion 10 : 20 : 40 : 80 or 1 : 2 : 4 : 8, that the latter without doubt represent the correct values.
The multiples of 10 are again strikingly convenient (cf. p. 20, s. 10), and it is quite likely that Mendel deliberately chose to raise about 640 plants to demonstrate these ratios.
proportion = Verhältniss See p. 3, s. 8.
correct = richtig As the English “correct”, richtig does not necessarily indicate truth, but rather conformity to a norm, or absence of error.