Finding the Fourth Proportional to 316.74, 436.85 and 260.99
Calculator
Solution
The fourth proportional to 316.74, 436.85 and 260.99 is: 359.95
Step by Step Solution
- Step 1: Write the proportion equation
316.74 : 436.85 = 260.99 : x - Step 2: Convert to fraction form
316.74/436.85 = 260.99/x - Step 3: Cross multiply
316.74x = 436.85 × 260.99 - Step 4: Simplify right side
316.74x = 114,009.99 - Step 5: Solve for x
x = 114,009.99/316.74 - Step 6: Final answer
x = 359.95
Related Problems
Find fourth proportional to 158.37, 218.42 and 130.49
Half scale
Find fourth proportional to 633.48, 873.69 and 521.97
Double scale
Find fourth proportional to 317.74, 438.22 and 261.99
Similar ratio
Find fourth proportional to 475.11, 655.27 and 391.48
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.