PRINCETON, NJ — President Obama’s job approval rating fell to 47% for the week ending April 11, the lowest of his administration so far by one percentage point. Obama’s weekly job approval average has fluctuated within the narrow four-point range of 47% to 51% since January of this year. The current weekly average more than anything else represents a continuation of the president’s generally lower approval ratings this year compared to the higher ratings he enjoyed in his first year in office. On a short-term basis, Obama’s latest three-day average (Friday through Sunday) is at 45%, with disapproval at 48% — both of which are the worst three-day averages since Obama took office.