Finding the Fourth Proportional to 195.21, 292.95 and 99
Calculator
Solution
The fourth proportional to 195.21, 292.95 and 99 is: 148.57
Step by Step Solution
- Step 1: Write the proportion equation
195.21 : 292.95 = 99 : x - Step 2: Convert to fraction form
195.21/292.95 = 99/x - Step 3: Cross multiply
195.21x = 292.95 × 99 - Step 4: Simplify right side
195.21x = 29,002.05 - Step 5: Solve for x
x = 29,002.05/195.21 - Step 6: Final answer
x = 148.57
Related Problems
Find fourth proportional to 97.61, 146.48 and 49.50
Half scale
Find fourth proportional to 390.42, 585.90 and 198
Double scale
Find fourth proportional to 196.21, 294.45 and 100
Similar ratio
Find fourth proportional to 292.82, 439.43 and 148.50
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.