Finding the Fourth Proportional to 72.56, 108.53 and 62.84
Calculator
Solution
The fourth proportional to 72.56, 108.53 and 62.84 is: 93.99
Step by Step Solution
- Step 1: Write the proportion equation
72.56 : 108.53 = 62.84 : x - Step 2: Convert to fraction form
72.56/108.53 = 62.84/x - Step 3: Cross multiply
72.56x = 108.53 × 62.84 - Step 4: Simplify right side
72.56x = 6,820.03 - Step 5: Solve for x
x = 6,820.03/72.56 - Step 6: Final answer
x = 93.99
Related Problems
Find fourth proportional to 36.28, 54.27 and 31.42
Half scale
Find fourth proportional to 145.12, 217.06 and 125.68
Double scale
Find fourth proportional to 73.56, 110.03 and 63.84
Similar ratio
Find fourth proportional to 108.84, 162.80 and 94.26
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.