Finding the Fourth Proportional to 673.99, 930.10 and 412
Calculator
Solution
The fourth proportional to 673.99, 930.10 and 412 is: 568.56
Step by Step Solution
- Step 1: Write the proportion equation
673.99 : 930.10 = 412 : x - Step 2: Convert to fraction form
673.99/930.10 = 412/x - Step 3: Cross multiply
673.99x = 930.10 × 412 - Step 4: Simplify right side
673.99x = 383,201.20 - Step 5: Solve for x
x = 383,201.20/673.99 - Step 6: Final answer
x = 568.56
Related Problems
Find fourth proportional to 336.99, 465.05 and 206
Half scale
Find fourth proportional to 1,347.97, 1,860.20 and 824
Double scale
Find fourth proportional to 674.99, 931.48 and 413
Similar ratio
Find fourth proportional to 1,010.98, 1,395.15 and 618
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.