Finding the Fourth Proportional to 177.30, 266.00 and 81.09
Calculator
Solution
The fourth proportional to 177.30, 266.00 and 81.09 is: 121.66
Step by Step Solution
- Step 1: Write the proportion equation
177.30 : 266.00 = 81.09 : x - Step 2: Convert to fraction form
177.30/266.00 = 81.09/x - Step 3: Cross multiply
177.30x = 266.00 × 81.09 - Step 4: Simplify right side
177.30x = 21,571.14 - Step 5: Solve for x
x = 21,571.14/177.30 - Step 6: Final answer
x = 121.66
Related Problems
Find fourth proportional to 88.65, 133.00 and 40.55
Half scale
Find fourth proportional to 354.61, 532.01 and 162.19
Double scale
Find fourth proportional to 178.30, 267.50 and 82.09
Similar ratio
Find fourth proportional to 265.96, 399.00 and 121.64
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.