Finding the Fourth Proportional to 359.31, 536.18 and 318.31
Calculator
Solution
The fourth proportional to 359.31, 536.18 and 318.31 is: 475.00
Step by Step Solution
- Step 1: Write the proportion equation
359.31 : 536.18 = 318.31 : x - Step 2: Convert to fraction form
359.31/536.18 = 318.31/x - Step 3: Cross multiply
359.31x = 536.18 × 318.31 - Step 4: Simplify right side
359.31x = 170,671.46 - Step 5: Solve for x
x = 170,671.46/359.31 - Step 6: Final answer
x = 475.00
Related Problems
Find fourth proportional to 179.66, 268.09 and 159.16
Half scale
Find fourth proportional to 718.62, 1,072.36 and 636.62
Double scale
Find fourth proportional to 360.31, 537.67 and 319.31
Similar ratio
Find fourth proportional to 538.97, 804.27 and 477.47
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.