Finding the Fourth Proportional to 34.34, 47.37 and 31.88
Calculator
Solution
The fourth proportional to 34.34, 47.37 and 31.88 is: 43.99
Step by Step Solution
- Step 1: Write the proportion equation
34.34 : 47.37 = 31.88 : x - Step 2: Convert to fraction form
34.34/47.37 = 31.88/x - Step 3: Cross multiply
34.34x = 47.37 × 31.88 - Step 4: Simplify right side
34.34x = 1,510.27 - Step 5: Solve for x
x = 1,510.27/34.34 - Step 6: Final answer
x = 43.99
Related Problems
Find fourth proportional to 17.17, 23.69 and 15.94
Half scale
Find fourth proportional to 68.67, 94.74 and 63.77
Double scale
Find fourth proportional to 35.34, 48.75 and 32.88
Similar ratio
Find fourth proportional to 51.50, 71.06 and 47.82
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.