Finding the Fourth Proportional to 750.59, 1,128 and 442.58
Calculator
Solution
The fourth proportional to 750.59, 1,128 and 442.58 is: 665.12
Step by Step Solution
- Step 1: Write the proportion equation
750.59 : 1,128 = 442.58 : x - Step 2: Convert to fraction form
750.59/1,128 = 442.58/x - Step 3: Cross multiply
750.59x = 1,128 × 442.58 - Step 4: Simplify right side
750.59x = 499,230.24 - Step 5: Solve for x
x = 499,230.24/750.59 - Step 6: Final answer
x = 665.12
Related Problems
Find fourth proportional to 375.29, 564 and 221.29
Half scale
Find fourth proportional to 1,501.17, 2,256 and 885.16
Double scale
Find fourth proportional to 751.59, 1,129.50 and 443.58
Similar ratio
Find fourth proportional to 1,125.88, 1,692 and 663.87
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.