The image you provided contains an expression related to logarithms. Here's how it reads:

$\frac{1}{3} \log 7 : \log 27 = \dots$

This appears to be asking to simplify or find a value based on a logarithmic relation.

Simplification Steps:

1. Rewrite the logarithms: We have two logarithms: $\log 7$ and $\log 27$. There is a factor $\frac{1}{3}$ in front of $\log 7$.

   $\frac{1}{3} \log 7 \quad \text{and} \quad \log 27$

2. Apply the properties of logarithms: Using the property of logarithms that states $a \log b = \log b^a$, we can rewrite $\frac{1}{3} \log 7$ as:

   $\log 7^{\frac{1}{3}} = \log \sqrt[3]{7}$

3. Expression now becomes: $\log \sqrt[3]{7} : \log 27$

4. Simplify further: The colon ":" represents division, so this expression is equivalent to:

   $\frac{\log \sqrt[3]{7}}{\log 27}$

   This is the simplified form of the given logarithmic expression. Further evaluation would depend on whether you want to compute numerical values or leave it in this simplified form.

Would you like to proceed with calculating numerical values or explore further details?

Related Questions:

1. What is the value of $\log 7$ and $\log 27$ in base 10?
2. How does the change of base formula apply to this logarithmic ratio?
3. What are the properties of logarithms used to simplify expressions like this?
4. How do you interpret logarithmic divisions or ratios in real-world scenarios?
5. How would this problem change if the base of the logarithm was different?

Tip: When simplifying logarithmic expressions, always check for properties like power, product, and quotient rules to make the process easier.