Finding the Fourth Proportional to 547.26, 821.13 and 239.19
Calculator
Solution
The fourth proportional to 547.26, 821.13 and 239.19 is: 358.89
Step by Step Solution
- Step 1: Write the proportion equation
547.26 : 821.13 = 239.19 : x - Step 2: Convert to fraction form
547.26/821.13 = 239.19/x - Step 3: Cross multiply
547.26x = 821.13 × 239.19 - Step 4: Simplify right side
547.26x = 196,406.08 - Step 5: Solve for x
x = 196,406.08/547.26 - Step 6: Final answer
x = 358.89
Related Problems
Find fourth proportional to 273.63, 410.57 and 119.60
Half scale
Find fourth proportional to 1,094.52, 1,642.26 and 478.38
Double scale
Find fourth proportional to 548.26, 822.63 and 240.19
Similar ratio
Find fourth proportional to 820.89, 1,231.70 and 358.79
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.