Finding the Fourth Proportional to 992.01, 1,368 and 913.53
Calculator
Solution
The fourth proportional to 992.01, 1,368 and 913.53 is: 1,259.77
Step by Step Solution
- Step 1: Write the proportion equation
992.01 : 1,368 = 913.53 : x - Step 2: Convert to fraction form
992.01/1,368 = 913.53/x - Step 3: Cross multiply
992.01x = 1,368 × 913.53 - Step 4: Simplify right side
992.01x = 1,249,709.04 - Step 5: Solve for x
x = 1,249,709.04/992.01 - Step 6: Final answer
x = 1,259.77
Related Problems
Find fourth proportional to 496.01, 684 and 456.77
Half scale
Find fourth proportional to 1,984.02, 2,736 and 1,827.06
Double scale
Find fourth proportional to 993.01, 1,369.38 and 914.53
Similar ratio
Find fourth proportional to 1,488.02, 2,052 and 1,370.30
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.