Finding the Fourth Proportional to 333, 499.50 and 105
Calculator
Solution
The fourth proportional to 333, 499.50 and 105 is: 157.50
Step by Step Solution
- Step 1: Write the proportion equation
333 : 499.50 = 105 : x - Step 2: Convert to fraction form
333/499.50 = 105/x - Step 3: Cross multiply
333x = 499.50 × 105 - Step 4: Simplify right side
333x = 52,447.50 - Step 5: Solve for x
x = 52,447.50/333 - Step 6: Final answer
x = 157.50
Related Problems
Find fourth proportional to 166.50, 249.75 and 52.50
Half scale
Find fourth proportional to 666, 999 and 210
Double scale
Find fourth proportional to 334, 501 and 106
Similar ratio
Find fourth proportional to 499.50, 749.25 and 157.50
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.