Finding the Fourth Proportional to 94.79, 130.79 and 63.68
Calculator
Solution
The fourth proportional to 94.79, 130.79 and 63.68 is: 87.86
Step by Step Solution
- Step 1: Write the proportion equation
94.79 : 130.79 = 63.68 : x - Step 2: Convert to fraction form
94.79/130.79 = 63.68/x - Step 3: Cross multiply
94.79x = 130.79 × 63.68 - Step 4: Simplify right side
94.79x = 8,327.73 - Step 5: Solve for x
x = 8,327.73/94.79 - Step 6: Final answer
x = 87.86
Related Problems
Find fourth proportional to 47.39, 65.39 and 31.84
Half scale
Find fourth proportional to 189.57, 261.57 and 127.35
Double scale
Find fourth proportional to 95.79, 132.16 and 64.68
Similar ratio
Find fourth proportional to 142.18, 196.18 and 95.51
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.