题目内容
根据已知条件,求a:b:c.
(1)a:b=0.7:
,b:c=5:6
(2)a:b=
:
,b:c=0.4:1.3.
(1)a:b=0.7:
5 |
4 |
(2)a:b=
1 |
4 |
2 |
3 |
分析:先分别求出a和b,b和c的最简比,进而依据比的性质即可得出三个数的连比.
解答:解:(1)因为a:b=0.7:
=7:8=35:40,
b:c=5:6=40:48,
所以a:b:c=35:40:48;
(2)因为a:b=
:
=3:8,
b:c=0.4:1.3=4:13=8:26,
所以a:b:c=3:8:26.
4 |
5 |
b:c=5:6=40:48,
所以a:b:c=35:40:48;
(2)因为a:b=
1 |
4 |
2 |
3 |
b:c=0.4:1.3=4:13=8:26,
所以a:b:c=3:8:26.
点评:此题主要考查比的性质的灵活应用.
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