diff --git a/lib/vmpooler/api/helpers.rb b/lib/vmpooler/api/helpers.rb
index 6d0cbe6..0b98143 100644
--- a/lib/vmpooler/api/helpers.rb
+++ b/lib/vmpooler/api/helpers.rb
@@ -216,7 +216,7 @@ module Vmpooler
         capacity[:current] = get_total_across_pools_redis_scard(pools, 'vmpooler__ready__', backend)
 
         if capacity[:total] > 0
-          capacity[:percent] = ((capacity[:current].to_f / capacity[:total].to_f) * 100.0).round(1)
+          capacity[:percent] = (capacity[:current].fdiv(capacity[:total]) * 100.0).round(1)
         end
 
         capacity
diff --git a/lib/vmpooler/providers/vsphere.rb b/lib/vmpooler/providers/vsphere.rb
index 256e55a..8526dea 100644
--- a/lib/vmpooler/providers/vsphere.rb
+++ b/lib/vmpooler/providers/vsphere.rb
@@ -759,7 +759,7 @@ module Vmpooler
           return nil if cpu_usage.nil?
 
           cpu_size = host.summary.hardware.cpuMhz * host.summary.hardware.numCpuCores
-          (cpu_usage.to_f / cpu_size.to_f) * 100
+          cpu_usage.fdiv(cpu_size) * 100
         end
 
         def memory_utilization_for(host)
@@ -767,7 +767,7 @@ module Vmpooler
           return nil if memory_usage.nil?
 
           memory_size = host.summary.hardware.memorySize / 1024 / 1024
-          (memory_usage.to_f / memory_size.to_f) * 100
+          memory_usage.fdiv(memory_size) * 100
         end
 
         def get_average_cluster_utilization(hosts)