Questar Corp. has approved a common stock dividend of 47 cents per share, payable March 20 to shareholders of record Feb. 24.

Mountain Fuel Supply Co., a Ques-tar subsidiary, declared dividends on the company's two series of preferred stock. The dividends are $2 per share on the 8 percent series and $2.15625 on the $8.625 series. Both will be paid April 3 to holders of rec-ord on March 3.