Finding the Fourth Proportional to 339.21, 467.53 and 239.66
Calculator
Solution
The fourth proportional to 339.21, 467.53 and 239.66 is: 330.32
Step by Step Solution
- Step 1: Write the proportion equation
339.21 : 467.53 = 239.66 : x - Step 2: Convert to fraction form
339.21/467.53 = 239.66/x - Step 3: Cross multiply
339.21x = 467.53 × 239.66 - Step 4: Simplify right side
339.21x = 112,048.24 - Step 5: Solve for x
x = 112,048.24/339.21 - Step 6: Final answer
x = 330.32
Related Problems
Find fourth proportional to 169.61, 233.77 and 119.83
Half scale
Find fourth proportional to 678.42, 935.06 and 479.32
Double scale
Find fourth proportional to 340.21, 468.91 and 240.66
Similar ratio
Find fourth proportional to 508.82, 701.30 and 359.49
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.