Finding the Fourth Proportional to 313.13, 468.99 and 221.54
Calculator
Solution
The fourth proportional to 313.13, 468.99 and 221.54 is: 331.80
Step by Step Solution
- Step 1: Write the proportion equation
313.13 : 468.99 = 221.54 : x - Step 2: Convert to fraction form
313.13/468.99 = 221.54/x - Step 3: Cross multiply
313.13x = 468.99 × 221.54 - Step 4: Simplify right side
313.13x = 103,897.70 - Step 5: Solve for x
x = 103,897.70/313.13 - Step 6: Final answer
x = 331.80
Related Problems
Find fourth proportional to 156.57, 234.50 and 110.77
Half scale
Find fourth proportional to 626.27, 937.98 and 443.07
Double scale
Find fourth proportional to 314.13, 470.49 and 222.54
Similar ratio
Find fourth proportional to 469.70, 703.49 and 332.30
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.