Finding the Fourth Proportional to 1,572.08, 2,358 and 402.08
Calculator
Solution
The fourth proportional to 1,572.08, 2,358 and 402.08 is: 603.09
Step by Step Solution
- Step 1: Write the proportion equation
1,572.08 : 2,358 = 402.08 : x - Step 2: Convert to fraction form
1,572.08/2,358 = 402.08/x - Step 3: Cross multiply
1,572.08x = 2,358 × 402.08 - Step 4: Simplify right side
1,572.08x = 948,104.64 - Step 5: Solve for x
x = 948,104.64/1,572.08 - Step 6: Final answer
x = 603.09
Related Problems
Find fourth proportional to 786.04, 1,179 and 201.04
Half scale
Find fourth proportional to 3,144.16, 4,716 and 804.16
Double scale
Find fourth proportional to 1,573.08, 2,359.50 and 403.08
Similar ratio
Find fourth proportional to 2,358.12, 3,537 and 603.12
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.