unexpected output while using float variable in if statement

//here's my code

#include<stdio.h>
#include<stdlib.h>

int main()
{
    int N;
    scanf("%d",&N);
    int i,ct=0;//ct is to count how many given inputs of W & H fulfill the if and else if conditional statements given below.
    float W,H,ratio;//W and H are width and rectangle of rectangle respectively.ratio is ratio b/w W&H.  
    for(i=0;i<N;i++)
    {
        scanf("%f%f",&W,&H);
        ratio=W/H;
        printf("%f\n",ratio);
        if(ratio==1.7)//this statement is not getting executed for some reason
        {
            printf("true\n");
            ct++;
        }
        else if(ratio>1.6)
        {
            if(ratio<1.7)
            ct++;
        }   
    }
    printf("%d",ct);
}

note: when I give input as following

1 
10 1

supposed output is

ct=1

my output is

ct=0 

//ratio is 1.7 but if statement above is not getting executed that's why ct is not getting updated I want to know what is the problem with my above if statement.