Finding the Fourth Proportional to 785.44, 1,177.68 and 352
Calculator
Solution
The fourth proportional to 785.44, 1,177.68 and 352 is: 527.78
Step by Step Solution
- Step 1: Write the proportion equation
785.44 : 1,177.68 = 352 : x - Step 2: Convert to fraction form
785.44/1,177.68 = 352/x - Step 3: Cross multiply
785.44x = 1,177.68 × 352 - Step 4: Simplify right side
785.44x = 414,543.36 - Step 5: Solve for x
x = 414,543.36/785.44 - Step 6: Final answer
x = 527.78
Related Problems
Find fourth proportional to 392.72, 588.84 and 176
Half scale
Find fourth proportional to 1,570.88, 2,355.36 and 704
Double scale
Find fourth proportional to 786.44, 1,179.18 and 353
Similar ratio
Find fourth proportional to 1,178.16, 1,766.52 and 528
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.