Finding the Fourth Proportional to 73.19, 109.74 and 29.84
Calculator
Solution
The fourth proportional to 73.19, 109.74 and 29.84 is: 44.75
Step by Step Solution
- Step 1: Write the proportion equation
73.19 : 109.74 = 29.84 : x - Step 2: Convert to fraction form
73.19/109.74 = 29.84/x - Step 3: Cross multiply
73.19x = 109.74 × 29.84 - Step 4: Simplify right side
73.19x = 3,275.09 - Step 5: Solve for x
x = 3,275.09/73.19 - Step 6: Final answer
x = 44.75
Related Problems
Find fourth proportional to 36.59, 54.87 and 14.92
Half scale
Find fourth proportional to 146.38, 219.48 and 59.69
Double scale
Find fourth proportional to 74.19, 111.24 and 30.84
Similar ratio
Find fourth proportional to 109.78, 164.61 and 44.77
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.