Finding the Fourth Proportional to 884.70, 1,220.99 and 511.80
Calculator
Solution
The fourth proportional to 884.70, 1,220.99 and 511.80 is: 706.34
Step by Step Solution
- Step 1: Write the proportion equation
884.70 : 1,220.99 = 511.80 : x - Step 2: Convert to fraction form
884.70/1,220.99 = 511.80/x - Step 3: Cross multiply
884.70x = 1,220.99 × 511.80 - Step 4: Simplify right side
884.70x = 624,894.02 - Step 5: Solve for x
x = 624,894.02/884.70 - Step 6: Final answer
x = 706.34
Related Problems
Find fourth proportional to 442.35, 610.49 and 255.90
Half scale
Find fourth proportional to 1,769.39, 2,441.97 and 1,023.59
Double scale
Find fourth proportional to 885.70, 1,222.37 and 512.80
Similar ratio
Find fourth proportional to 1,327.04, 1,831.48 and 767.69
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.