Finding the Fourth Proportional to 406.62, 609.99 and 201.17
Calculator
Solution
The fourth proportional to 406.62, 609.99 and 201.17 is: 301.79
Step by Step Solution
- Step 1: Write the proportion equation
406.62 : 609.99 = 201.17 : x - Step 2: Convert to fraction form
406.62/609.99 = 201.17/x - Step 3: Cross multiply
406.62x = 609.99 × 201.17 - Step 4: Simplify right side
406.62x = 122,712.46 - Step 5: Solve for x
x = 122,712.46/406.62 - Step 6: Final answer
x = 301.79
Related Problems
Find fourth proportional to 203.31, 304.99 and 100.59
Half scale
Find fourth proportional to 813.24, 1,219.97 and 402.35
Double scale
Find fourth proportional to 407.62, 611.49 and 202.17
Similar ratio
Find fourth proportional to 609.93, 914.98 and 301.76
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.