Finding the Fourth Proportional to 51.24, 76.89 and 35.31
Calculator
Solution
The fourth proportional to 51.24, 76.89 and 35.31 is: 52.99
Step by Step Solution
- Step 1: Write the proportion equation
51.24 : 76.89 = 35.31 : x - Step 2: Convert to fraction form
51.24/76.89 = 35.31/x - Step 3: Cross multiply
51.24x = 76.89 × 35.31 - Step 4: Simplify right side
51.24x = 2,714.99 - Step 5: Solve for x
x = 2,714.99/51.24 - Step 6: Final answer
x = 52.99
Related Problems
Find fourth proportional to 25.62, 38.45 and 17.66
Half scale
Find fourth proportional to 102.48, 153.78 and 70.62
Double scale
Find fourth proportional to 52.24, 78.39 and 36.31
Similar ratio
Find fourth proportional to 76.86, 115.34 and 52.97
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.