Finding the Fourth Proportional to 316.95, 475.09 and 213.99
Calculator
Solution
The fourth proportional to 316.95, 475.09 and 213.99 is: 320.76
Step by Step Solution
- Step 1: Write the proportion equation
316.95 : 475.09 = 213.99 : x - Step 2: Convert to fraction form
316.95/475.09 = 213.99/x - Step 3: Cross multiply
316.95x = 475.09 × 213.99 - Step 4: Simplify right side
316.95x = 101,664.51 - Step 5: Solve for x
x = 101,664.51/316.95 - Step 6: Final answer
x = 320.76
Related Problems
Find fourth proportional to 158.48, 237.55 and 107.00
Half scale
Find fourth proportional to 633.90, 950.18 and 427.98
Double scale
Find fourth proportional to 317.95, 476.59 and 214.99
Similar ratio
Find fourth proportional to 475.43, 712.64 and 320.99
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.