Wyznacz niewiadomy wyraz proporcji.
a) 5½ : a = 2¾ : 3
b)16 : 3⅗ = a : 1,2
c) a : 0,3 = 3,6 : 2⅖
d) 5 : a = 4⅔ : 1⅙
a)
5,5------a
2,75-----3
a=5.5*3/2,75
a=0,06
b)
16----3,6
a------1,2
a=16*1,2/3,6
a=5,3
c)
a-----0,3
3,6----2,4
a=3,6*0,3/2,4
a=0,45
d)
5----a
4,6---1,1
a=5*1,1/4,6
a=1,1
5 i 1/2 : a = 2i 3/4 : 3
2 i 3/4* a = 3 * 5 i 1/2
11a/4 = 3 * 11/2
11a/4 = 33/2
22a = 132 / : 22
a = 6
B)
16 : 3 i 2/5 = a : 1,2
3 i 2/5 *a = 12/10 * 16
17a/5 =96/5
17a * 5 = 5*96
85a = 480 /:5
17a = 96
a = 96/17 = 5 i 11/17
a : 0,3 = 3,6 : 2i 2/5
1 i1/6 *a = 3,6 * 0,3
7a/6 = 1,08 /*6
7a = 6,48
a = 6,48/7= 648/100 * 1/7 = 648/700 = 162/175
5 : a = 4i 2/3 : 1i 1/6
4 i 2/3 *a =1 i 1/6 *5
14a/3 = 36/6
6*14a =3* 35
84a = 105
a = 105/84 = 1 i 21/84 = 1 i 1/4
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a)
5,5------a
2,75-----3
a=5.5*3/2,75
a=0,06
b)
16----3,6
a------1,2
a=16*1,2/3,6
a=5,3
c)
a-----0,3
3,6----2,4
a=3,6*0,3/2,4
a=0,45
d)
5----a
4,6---1,1
a=5*1,1/4,6
a=1,1
a)
5 i 1/2 : a = 2i 3/4 : 3
2 i 3/4* a = 3 * 5 i 1/2
11a/4 = 3 * 11/2
11a/4 = 33/2
22a = 132 / : 22
a = 6
B)
16 : 3 i 2/5 = a : 1,2
3 i 2/5 *a = 12/10 * 16
17a/5 =96/5
17a * 5 = 5*96
85a = 480 /:5
17a = 96
a = 96/17 = 5 i 11/17
c)
a : 0,3 = 3,6 : 2i 2/5
1 i1/6 *a = 3,6 * 0,3
7a/6 = 1,08 /*6
7a = 6,48
a = 6,48/7= 648/100 * 1/7 = 648/700 = 162/175
d)
5 : a = 4i 2/3 : 1i 1/6
4 i 2/3 *a =1 i 1/6 *5
14a/3 = 36/6
6*14a =3* 35
84a = 105
a = 105/84 = 1 i 21/84 = 1 i 1/4