Finding the Fourth Proportional to 477.52, 658.78 and 290.99
Calculator
Solution
The fourth proportional to 477.52, 658.78 and 290.99 is: 401.45
Step by Step Solution
- Step 1: Write the proportion equation
477.52 : 658.78 = 290.99 : x - Step 2: Convert to fraction form
477.52/658.78 = 290.99/x - Step 3: Cross multiply
477.52x = 658.78 × 290.99 - Step 4: Simplify right side
477.52x = 191,699.31 - Step 5: Solve for x
x = 191,699.31/477.52 - Step 6: Final answer
x = 401.45
Related Problems
Find fourth proportional to 238.76, 329.39 and 145.50
Half scale
Find fourth proportional to 955.04, 1,317.56 and 581.99
Double scale
Find fourth proportional to 478.52, 660.16 and 291.99
Similar ratio
Find fourth proportional to 716.28, 988.17 and 436.49
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.