\(\frac3{25}=\frac3{25}\times\frac{63}{63}=\frac{189}{1575}\)
\(\frac35 = \frac35\times\frac{315}{315}=\frac{945}{1575}\)
\(\frac3{15} = \frac3{15}\times\frac{105}{105}=\frac{315}{1575}\)
\(\frac3{35} = \frac3{35}\times\frac{45}{45}=\frac{135}{1575}\)
\(\frac3{45} = \frac3{45}\times\frac{35}{35}=\frac{105}{1575}\)
\(\because\) \(\frac{105}{1576}<\frac{35}{1575}<\frac3{25}<\frac3{15}<\frac35\)
Alternate method:
\(\because\) 5 < 15 < 25 < 35 < 45
⇒ 1/45 < 1/35 < 1/25 < 1/15 < 1/5
⇒ 3/45 < 3/35 < 3/25 < 3/15 < 3/5
