Finding the Fourth Proportional to 697.87, 963.26 and 403.26
Calculator
Solution
The fourth proportional to 697.87, 963.26 and 403.26 is: 556.61
Step by Step Solution
- Step 1: Write the proportion equation
697.87 : 963.26 = 403.26 : x - Step 2: Convert to fraction form
697.87/963.26 = 403.26/x - Step 3: Cross multiply
697.87x = 963.26 × 403.26 - Step 4: Simplify right side
697.87x = 388,444.23 - Step 5: Solve for x
x = 388,444.23/697.87 - Step 6: Final answer
x = 556.61
Related Problems
Find fourth proportional to 348.94, 481.63 and 201.63
Half scale
Find fourth proportional to 1,395.74, 1,926.52 and 806.52
Double scale
Find fourth proportional to 698.87, 964.64 and 404.26
Similar ratio
Find fourth proportional to 1,046.81, 1,444.89 and 604.89
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.