Finding the Fourth Proportional to 239.66, 358.68 and 143
Calculator
Solution
The fourth proportional to 239.66, 358.68 and 143 is: 214.02
Step by Step Solution
- Step 1: Write the proportion equation
239.66 : 358.68 = 143 : x - Step 2: Convert to fraction form
239.66/358.68 = 143/x - Step 3: Cross multiply
239.66x = 358.68 × 143 - Step 4: Simplify right side
239.66x = 51,291.24 - Step 5: Solve for x
x = 51,291.24/239.66 - Step 6: Final answer
x = 214.02
Related Problems
Find fourth proportional to 119.83, 179.34 and 71.50
Half scale
Find fourth proportional to 479.32, 717.36 and 286
Double scale
Find fourth proportional to 240.66, 360.18 and 144
Similar ratio
Find fourth proportional to 359.49, 538.02 and 214.50
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.