Finding the Fourth Proportional to 435.18, 652.08 and 261.42
Calculator
Solution
The fourth proportional to 435.18, 652.08 and 261.42 is: 391.72
Step by Step Solution
- Step 1: Write the proportion equation
435.18 : 652.08 = 261.42 : x - Step 2: Convert to fraction form
435.18/652.08 = 261.42/x - Step 3: Cross multiply
435.18x = 652.08 × 261.42 - Step 4: Simplify right side
435.18x = 170,466.75 - Step 5: Solve for x
x = 170,466.75/435.18 - Step 6: Final answer
x = 391.72
Related Problems
Find fourth proportional to 217.59, 326.04 and 130.71
Half scale
Find fourth proportional to 870.36, 1,304.16 and 522.84
Double scale
Find fourth proportional to 436.18, 653.58 and 262.42
Similar ratio
Find fourth proportional to 652.77, 978.12 and 392.13
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.