Finding the Fourth Proportional to 371.97, 514.08 and 288.99
Calculator
Solution
The fourth proportional to 371.97, 514.08 and 288.99 is: 399.40
Step by Step Solution
- Step 1: Write the proportion equation
371.97 : 514.08 = 288.99 : x - Step 2: Convert to fraction form
371.97/514.08 = 288.99/x - Step 3: Cross multiply
371.97x = 514.08 × 288.99 - Step 4: Simplify right side
371.97x = 148,563.98 - Step 5: Solve for x
x = 148,563.98/371.97 - Step 6: Final answer
x = 399.40
Related Problems
Find fourth proportional to 185.99, 257.04 and 144.50
Half scale
Find fourth proportional to 743.94, 1,028.16 and 577.98
Double scale
Find fourth proportional to 372.97, 515.46 and 289.99
Similar ratio
Find fourth proportional to 557.96, 771.12 and 433.49
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.