Finding the Fourth Proportional to 340.68, 510.92 and 135.28
Calculator
Solution
The fourth proportional to 340.68, 510.92 and 135.28 is: 202.88
Step by Step Solution
- Step 1: Write the proportion equation
340.68 : 510.92 = 135.28 : x - Step 2: Convert to fraction form
340.68/510.92 = 135.28/x - Step 3: Cross multiply
340.68x = 510.92 × 135.28 - Step 4: Simplify right side
340.68x = 69,117.26 - Step 5: Solve for x
x = 69,117.26/340.68 - Step 6: Final answer
x = 202.88
Related Problems
Find fourth proportional to 170.34, 255.46 and 67.64
Half scale
Find fourth proportional to 681.36, 1,021.84 and 270.56
Double scale
Find fourth proportional to 341.68, 512.42 and 136.28
Similar ratio
Find fourth proportional to 511.02, 766.38 and 202.92
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.