Finding the Fourth Proportional to 340.17, 509.99 and 134.63
Calculator
Solution
The fourth proportional to 340.17, 509.99 and 134.63 is: 201.84
Step by Step Solution
- Step 1: Write the proportion equation
340.17 : 509.99 = 134.63 : x - Step 2: Convert to fraction form
340.17/509.99 = 134.63/x - Step 3: Cross multiply
340.17x = 509.99 × 134.63 - Step 4: Simplify right side
340.17x = 68,659.95 - Step 5: Solve for x
x = 68,659.95/340.17 - Step 6: Final answer
x = 201.84
Related Problems
Find fourth proportional to 170.09, 255.00 and 67.32
Half scale
Find fourth proportional to 680.34, 1,019.98 and 269.26
Double scale
Find fourth proportional to 341.17, 511.49 and 135.63
Similar ratio
Find fourth proportional to 510.26, 764.99 and 201.95
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.