Design pattern example for temperature conversions

temperature_conversions.rb

  def kelvin_to_rankine(value)
    value * 1.8
  end

  def rankine_to_kelvin(value)
    value / 1.8
  end

  def rankine_to_celcius(value)
    value_holder = rankine_to_kelvin(value)
    kelvin_to_celcius(value_holder)
  end

  def rankine_to_fahrenheit(value)
    value_holder = rankine_to_kelvin(value)
    kelvin_to_fahrenheit(value_holder)
  end

  def celcius_to_rankine(value)
    value_holder = celcius_to_kelvin(value)
    kelvin_to_rankine(value_holder)
  end

  def fahrenheit_to_rankine(value)
    value_holder = fahrenheit_to_kelvin(value)
    kelvin_to_rankine(value_holder)
  end

Using kelvins as a medium for conversions instead of writing individual conversions.