Finding the Fourth Proportional to 267.64, 401.31 and 84.99
Calculator
Solution
The fourth proportional to 267.64, 401.31 and 84.99 is: 127.44
Step by Step Solution
- Step 1: Write the proportion equation
267.64 : 401.31 = 84.99 : x - Step 2: Convert to fraction form
267.64/401.31 = 84.99/x - Step 3: Cross multiply
267.64x = 401.31 × 84.99 - Step 4: Simplify right side
267.64x = 34,107.34 - Step 5: Solve for x
x = 34,107.34/267.64 - Step 6: Final answer
x = 127.44
Related Problems
Find fourth proportional to 133.82, 200.66 and 42.50
Half scale
Find fourth proportional to 535.28, 802.62 and 169.98
Double scale
Find fourth proportional to 268.64, 402.81 and 85.99
Similar ratio
Find fourth proportional to 401.46, 601.97 and 127.49
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.