Finding the Fourth Proportional to 38.49, 53.00 and 38.09
Calculator
Solution
The fourth proportional to 38.49, 53.00 and 38.09 is: 52.44
Step by Step Solution
- Step 1: Write the proportion equation
38.49 : 53.00 = 38.09 : x - Step 2: Convert to fraction form
38.49/53.00 = 38.09/x - Step 3: Cross multiply
38.49x = 53.00 × 38.09 - Step 4: Simplify right side
38.49x = 2,018.31 - Step 5: Solve for x
x = 2,018.31/38.49 - Step 6: Final answer
x = 52.44
Related Problems
Find fourth proportional to 19.25, 26.50 and 19.04
Half scale
Find fourth proportional to 76.98, 105.99 and 76.17
Double scale
Find fourth proportional to 39.49, 54.37 and 39.09
Similar ratio
Find fourth proportional to 57.74, 79.49 and 57.13
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.