Finding the Fourth Proportional to 454.75, 627.14 and 384.99
Calculator
Solution
The fourth proportional to 454.75, 627.14 and 384.99 is: 530.93
Step by Step Solution
- Step 1: Write the proportion equation
454.75 : 627.14 = 384.99 : x - Step 2: Convert to fraction form
454.75/627.14 = 384.99/x - Step 3: Cross multiply
454.75x = 627.14 × 384.99 - Step 4: Simplify right side
454.75x = 241,441.24 - Step 5: Solve for x
x = 241,441.24/454.75 - Step 6: Final answer
x = 530.93
Related Problems
Find fourth proportional to 227.37, 313.57 and 192.49
Half scale
Find fourth proportional to 909.50, 1,254.29 and 769.97
Double scale
Find fourth proportional to 455.75, 628.52 and 385.99
Similar ratio
Find fourth proportional to 682.12, 940.71 and 577.48
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.