Finding the Fourth Proportional to 1,206.24, 1,808.37 and 384
Calculator
Solution
The fourth proportional to 1,206.24, 1,808.37 and 384 is: 575.68
Step by Step Solution
- Step 1: Write the proportion equation
1,206.24 : 1,808.37 = 384 : x - Step 2: Convert to fraction form
1,206.24/1,808.37 = 384/x - Step 3: Cross multiply
1,206.24x = 1,808.37 × 384 - Step 4: Simplify right side
1,206.24x = 694,414.08 - Step 5: Solve for x
x = 694,414.08/1,206.24 - Step 6: Final answer
x = 575.68
Related Problems
Find fourth proportional to 603.12, 904.19 and 192
Half scale
Find fourth proportional to 2,412.48, 3,616.74 and 768
Double scale
Find fourth proportional to 1,207.24, 1,809.87 and 385
Similar ratio
Find fourth proportional to 1,809.36, 2,712.56 and 576
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.