Finding the Fourth Proportional to 35.18, 48.50 and 28.28
Calculator
Solution
The fourth proportional to 35.18, 48.50 and 28.28 is: 38.99
Step by Step Solution
- Step 1: Write the proportion equation
35.18 : 48.50 = 28.28 : x - Step 2: Convert to fraction form
35.18/48.50 = 28.28/x - Step 3: Cross multiply
35.18x = 48.50 × 28.28 - Step 4: Simplify right side
35.18x = 1,371.58 - Step 5: Solve for x
x = 1,371.58/35.18 - Step 6: Final answer
x = 38.99
Related Problems
Find fourth proportional to 17.59, 24.25 and 14.14
Half scale
Find fourth proportional to 70.36, 97 and 56.56
Double scale
Find fourth proportional to 36.18, 49.88 and 29.28
Similar ratio
Find fourth proportional to 52.77, 72.75 and 42.42
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.