Finding the Fourth Proportional to 413.26, 619.79 and 124.70
Calculator
Solution
The fourth proportional to 413.26, 619.79 and 124.70 is: 187.01
Step by Step Solution
- Step 1: Write the proportion equation
413.26 : 619.79 = 124.70 : x - Step 2: Convert to fraction form
413.26/619.79 = 124.70/x - Step 3: Cross multiply
413.26x = 619.79 × 124.70 - Step 4: Simplify right side
413.26x = 77,284.09 - Step 5: Solve for x
x = 77,284.09/413.26 - Step 6: Final answer
x = 187.01
Related Problems
Find fourth proportional to 206.63, 309.89 and 62.35
Half scale
Find fourth proportional to 826.52, 1,239.57 and 249.39
Double scale
Find fourth proportional to 414.26, 621.28 and 125.70
Similar ratio
Find fourth proportional to 619.89, 929.68 and 187.04
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.