The result came soon after Cameroon also qualified for the June 7-July 7 finals by finishing third in the Women's Africa Cup of Nations, beating Mali 4-2 in Cape Coast.
The top three teams from Africa qualify for the showpiece in France so Cup of Nations finalists Nigeria and South Africa face each other on Saturday knowing their places are secure.
South Africa, Chile, Jamaica and Scotland will all make their debut at the Women's World Cup. The United States are the defending champions, and record title holders (three), having beaten Japan 5-2 in the final at Canada 2015.
The draw for next year's tournament, which will be held in Paris next Saturday, will split the teams into six groups of four from four pots based on the FIFA women's world rankings.
(Reporting by Christian Radnedge; Editing by Ken Ferris)
