1.

Find the missing numbers in the following proportions in the table given 1:2::4:8​

Answer»
  • \star\boxed{\fcolorbox{red}{pink}{Proportion}}
  1. 1:2::4:8
  2. 5:6::75:90
  3. 3:4::24:32
  4. 2:5::X:15
  5. 3:6::12:x

  • \star\boxed{\fcolorbox{red}{beige}{Product of extremes}}

  1. 1×8=8
  2. 5×90=450
  3. 3×32=96
  4. 2×15=30
  5. 3×x or 3x=72⇒x= \frac{72}{3}=24

  • \star\boxed{\fcolorbox{red}{orange}{product of means}}
  1. 2×4=8
  2. 6×75=450
  3. 4×24=96
  4. 5x=30 or
  5. x=5
  6. 6×12=72

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