Finding the Fourth Proportional to 650.98, 978 and 614.08
Calculator
Solution
The fourth proportional to 650.98, 978 and 614.08 is: 922.56
Step by Step Solution
- Step 1: Write the proportion equation
650.98 : 978 = 614.08 : x - Step 2: Convert to fraction form
650.98/978 = 614.08/x - Step 3: Cross multiply
650.98x = 978 × 614.08 - Step 4: Simplify right side
650.98x = 600,570.24 - Step 5: Solve for x
x = 600,570.24/650.98 - Step 6: Final answer
x = 922.56
Related Problems
Find fourth proportional to 325.49, 489 and 307.04
Half scale
Find fourth proportional to 1,301.96, 1,956 and 1,228.16
Double scale
Find fourth proportional to 651.98, 979.50 and 615.08
Similar ratio
Find fourth proportional to 976.47, 1,467 and 921.12
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.