Finding the Fourth Proportional to 150.70, 207.94 and 91.65
Calculator
Solution
The fourth proportional to 150.70, 207.94 and 91.65 is: 126.46
Step by Step Solution
- Step 1: Write the proportion equation
150.70 : 207.94 = 91.65 : x - Step 2: Convert to fraction form
150.70/207.94 = 91.65/x - Step 3: Cross multiply
150.70x = 207.94 × 91.65 - Step 4: Simplify right side
150.70x = 19,057.24 - Step 5: Solve for x
x = 19,057.24/150.70 - Step 6: Final answer
x = 126.46
Related Problems
Find fourth proportional to 75.35, 103.97 and 45.83
Half scale
Find fourth proportional to 301.39, 415.87 and 183.30
Double scale
Find fourth proportional to 151.70, 209.31 and 92.65
Similar ratio
Find fourth proportional to 226.04, 311.90 and 137.48
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.