Finding the Fourth Proportional to 64.21, 95.68 and 63.68
Calculator
Solution
The fourth proportional to 64.21, 95.68 and 63.68 is: 94.88
Step by Step Solution
- Step 1: Write the proportion equation
64.21 : 95.68 = 63.68 : x - Step 2: Convert to fraction form
64.21/95.68 = 63.68/x - Step 3: Cross multiply
64.21x = 95.68 × 63.68 - Step 4: Simplify right side
64.21x = 6,092.42 - Step 5: Solve for x
x = 6,092.42/64.21 - Step 6: Final answer
x = 94.88
Related Problems
Find fourth proportional to 32.11, 47.84 and 31.84
Half scale
Find fourth proportional to 128.42, 191.36 and 127.35
Double scale
Find fourth proportional to 65.21, 97.17 and 64.68
Similar ratio
Find fourth proportional to 96.32, 143.52 and 95.51
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.