Finding the Fourth Proportional to 37.42, 56.06 and 30.70
Calculator
Solution
The fourth proportional to 37.42, 56.06 and 30.70 is: 45.99
Step by Step Solution
- Step 1: Write the proportion equation
37.42 : 56.06 = 30.70 : x - Step 2: Convert to fraction form
37.42/56.06 = 30.70/x - Step 3: Cross multiply
37.42x = 56.06 × 30.70 - Step 4: Simplify right side
37.42x = 1,721.04 - Step 5: Solve for x
x = 1,721.04/37.42 - Step 6: Final answer
x = 45.99
Related Problems
Find fourth proportional to 18.71, 28.03 and 15.35
Half scale
Find fourth proportional to 74.84, 112.12 and 61.40
Double scale
Find fourth proportional to 38.42, 57.56 and 31.70
Similar ratio
Find fourth proportional to 56.13, 84.09 and 46.05
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.