Finding the Fourth Proportional to 55.41, 83.10 and 19.33
Calculator
Solution
The fourth proportional to 55.41, 83.10 and 19.33 is: 28.99
Step by Step Solution
- Step 1: Write the proportion equation
55.41 : 83.10 = 19.33 : x - Step 2: Convert to fraction form
55.41/83.10 = 19.33/x - Step 3: Cross multiply
55.41x = 83.10 × 19.33 - Step 4: Simplify right side
55.41x = 1,606.32 - Step 5: Solve for x
x = 1,606.32/55.41 - Step 6: Final answer
x = 28.99
Related Problems
Find fourth proportional to 27.71, 41.55 and 9.67
Half scale
Find fourth proportional to 110.82, 166.20 and 38.66
Double scale
Find fourth proportional to 56.41, 84.60 and 20.33
Similar ratio
Find fourth proportional to 83.12, 124.65 and 29.00
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.