Finding the Fourth Proportional to 872.97, 1,204.68 and 479.99
Calculator
Solution
The fourth proportional to 872.97, 1,204.68 and 479.99 is: 662.37
Step by Step Solution
- Step 1: Write the proportion equation
872.97 : 1,204.68 = 479.99 : x - Step 2: Convert to fraction form
872.97/1,204.68 = 479.99/x - Step 3: Cross multiply
872.97x = 1,204.68 × 479.99 - Step 4: Simplify right side
872.97x = 578,228.33 - Step 5: Solve for x
x = 578,228.33/872.97 - Step 6: Final answer
x = 662.37
Related Problems
Find fourth proportional to 436.49, 602.34 and 239.99
Half scale
Find fourth proportional to 1,745.94, 2,409.36 and 959.97
Double scale
Find fourth proportional to 873.97, 1,206.06 and 480.99
Similar ratio
Find fourth proportional to 1,309.46, 1,807.02 and 719.98
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.