Finding the Fourth Proportional to 304.50, 420.21 and 201.18
Calculator
Solution
The fourth proportional to 304.50, 420.21 and 201.18 is: 277.63
Step by Step Solution
- Step 1: Write the proportion equation
304.50 : 420.21 = 201.18 : x - Step 2: Convert to fraction form
304.50/420.21 = 201.18/x - Step 3: Cross multiply
304.50x = 420.21 × 201.18 - Step 4: Simplify right side
304.50x = 84,537.85 - Step 5: Solve for x
x = 84,537.85/304.50 - Step 6: Final answer
x = 277.63
Related Problems
Find fourth proportional to 152.25, 210.11 and 100.59
Half scale
Find fourth proportional to 609, 840.42 and 402.36
Double scale
Find fourth proportional to 305.50, 421.59 and 202.18
Similar ratio
Find fourth proportional to 456.75, 630.32 and 301.77
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.