Finding the Fourth Proportional to 73.99, 110.81 and 55.63
Calculator
Solution
The fourth proportional to 73.99, 110.81 and 55.63 is: 83.32
Step by Step Solution
- Step 1: Write the proportion equation
73.99 : 110.81 = 55.63 : x - Step 2: Convert to fraction form
73.99/110.81 = 55.63/x - Step 3: Cross multiply
73.99x = 110.81 × 55.63 - Step 4: Simplify right side
73.99x = 6,164.64 - Step 5: Solve for x
x = 6,164.64/73.99 - Step 6: Final answer
x = 83.32
Related Problems
Find fourth proportional to 37.00, 55.41 and 27.82
Half scale
Find fourth proportional to 147.98, 221.63 and 111.26
Double scale
Find fourth proportional to 74.99, 112.31 and 56.63
Similar ratio
Find fourth proportional to 110.99, 166.22 and 83.45
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.