Finding the Fourth Proportional to 351.21, 484.63 and 201.85
Calculator
Solution
The fourth proportional to 351.21, 484.63 and 201.85 is: 278.52
Step by Step Solution
- Step 1: Write the proportion equation
351.21 : 484.63 = 201.85 : x - Step 2: Convert to fraction form
351.21/484.63 = 201.85/x - Step 3: Cross multiply
351.21x = 484.63 × 201.85 - Step 4: Simplify right side
351.21x = 97,819.13 - Step 5: Solve for x
x = 97,819.13/351.21 - Step 6: Final answer
x = 278.52
Related Problems
Find fourth proportional to 175.60, 242.31 and 100.92
Half scale
Find fourth proportional to 702.41, 969.25 and 403.69
Double scale
Find fourth proportional to 352.21, 486 and 202.85
Similar ratio
Find fourth proportional to 526.81, 726.94 and 302.77
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.