Finding the Fourth Proportional to 517.92, 777.10 and 243.99
Calculator
Solution
The fourth proportional to 517.92, 777.10 and 243.99 is: 366.09
Step by Step Solution
- Step 1: Write the proportion equation
517.92 : 777.10 = 243.99 : x - Step 2: Convert to fraction form
517.92/777.10 = 243.99/x - Step 3: Cross multiply
517.92x = 777.10 × 243.99 - Step 4: Simplify right side
517.92x = 189,604.63 - Step 5: Solve for x
x = 189,604.63/517.92 - Step 6: Final answer
x = 366.09
Related Problems
Find fourth proportional to 258.96, 388.55 and 122.00
Half scale
Find fourth proportional to 1,035.84, 1,554.20 and 487.98
Double scale
Find fourth proportional to 518.92, 778.60 and 244.99
Similar ratio
Find fourth proportional to 776.88, 1,165.65 and 365.99
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.