Finding the Fourth Proportional to 316.35, 474.28 and 153.99
Calculator
Solution
The fourth proportional to 316.35, 474.28 and 153.99 is: 230.86
Step by Step Solution
- Step 1: Write the proportion equation
316.35 : 474.28 = 153.99 : x - Step 2: Convert to fraction form
316.35/474.28 = 153.99/x - Step 3: Cross multiply
316.35x = 474.28 × 153.99 - Step 4: Simplify right side
316.35x = 73,033.99 - Step 5: Solve for x
x = 73,033.99/316.35 - Step 6: Final answer
x = 230.86
Related Problems
Find fourth proportional to 158.18, 237.14 and 77.00
Half scale
Find fourth proportional to 632.70, 948.56 and 307.98
Double scale
Find fourth proportional to 317.35, 475.78 and 154.99
Similar ratio
Find fourth proportional to 474.53, 711.42 and 230.99
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.