Finding the Fourth Proportional to 461.13, 636.21 and 274.65
Calculator
Solution
The fourth proportional to 461.13, 636.21 and 274.65 is: 378.93
Step by Step Solution
- Step 1: Write the proportion equation
461.13 : 636.21 = 274.65 : x - Step 2: Convert to fraction form
461.13/636.21 = 274.65/x - Step 3: Cross multiply
461.13x = 636.21 × 274.65 - Step 4: Simplify right side
461.13x = 174,735.08 - Step 5: Solve for x
x = 174,735.08/461.13 - Step 6: Final answer
x = 378.93
Related Problems
Find fourth proportional to 230.57, 318.11 and 137.33
Half scale
Find fourth proportional to 922.26, 1,272.42 and 549.30
Double scale
Find fourth proportional to 462.13, 637.59 and 275.65
Similar ratio
Find fourth proportional to 691.70, 954.32 and 411.98
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.