Finding the Fourth Proportional to 479.08, 718 and 218.99
Calculator
Solution
The fourth proportional to 479.08, 718 and 218.99 is: 328.20
Step by Step Solution
- Step 1: Write the proportion equation
479.08 : 718 = 218.99 : x - Step 2: Convert to fraction form
479.08/718 = 218.99/x - Step 3: Cross multiply
479.08x = 718 × 218.99 - Step 4: Simplify right side
479.08x = 157,234.82 - Step 5: Solve for x
x = 157,234.82/479.08 - Step 6: Final answer
x = 328.20
Related Problems
Find fourth proportional to 239.54, 359 and 109.50
Half scale
Find fourth proportional to 958.16, 1,436 and 437.98
Double scale
Find fourth proportional to 480.08, 719.50 and 219.99
Similar ratio
Find fourth proportional to 718.62, 1,077 and 328.49
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.