Find the ratio of 90 cm to 1.5 m.

Answer

To find the ratio of 90 cm to 1.5 m, we can follow these steps:

### Step 1: Convert the units to the same measurement
We need to convert 1.5 meters into centimeters because the other measurement is in centimeters.

1 meter = 100 centimeters, so:
1.5 meters = 1.5 × 100 = 150 centimeters.

### Step 2: Write the ratio
Now we can write the ratio of 90 cm to 150 cm:
Ratio = 90 cm : 150 cm.

### Step 3: Simplify the ratio
To simplify the ratio, we can divide both numbers by their greatest common divisor (GCD).

The GCD of 90 and 150 is 30.

So, we divide both 90 and 150 by 30:
90 ÷ 30 = 3,
150 ÷ 30 = 5.

Thus, the simplified ratio is:
3 : 5.

### Final Answer
The ratio of 90 cm to 1.5 m is 3 : 5.

---