Finding the Fourth Proportional to 821.14, 1,133.18 and 467.08
Calculator
Solution
The fourth proportional to 821.14, 1,133.18 and 467.08 is: 644.57
Step by Step Solution
- Step 1: Write the proportion equation
821.14 : 1,133.18 = 467.08 : x - Step 2: Convert to fraction form
821.14/1,133.18 = 467.08/x - Step 3: Cross multiply
821.14x = 1,133.18 × 467.08 - Step 4: Simplify right side
821.14x = 529,280.05 - Step 5: Solve for x
x = 529,280.05/821.14 - Step 6: Final answer
x = 644.57
Related Problems
Find fourth proportional to 410.57, 566.59 and 233.54
Half scale
Find fourth proportional to 1,642.27, 2,266.36 and 934.15
Double scale
Find fourth proportional to 822.14, 1,134.56 and 468.08
Similar ratio
Find fourth proportional to 1,231.70, 1,699.77 and 700.61
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.