Suppose that zero interest rates with continuous compounding are as follows: 

Matury (in years) Rate (% per annum) 

Maturity               Rate % 1                             3..5 2                           4.0 3                            4.2 4                          4.6 5                         5.0 What is the one year forward interest rate for the fourth year? Please enter your answer as a number rounded to one decimal place (e.g., enter 6.0 to indicate 6.0%).