Finding the Fourth Proportional to 444.08, 665.21 and 260.92
Calculator
Solution
The fourth proportional to 444.08, 665.21 and 260.92 is: 390.85
Step by Step Solution
- Step 1: Write the proportion equation
444.08 : 665.21 = 260.92 : x - Step 2: Convert to fraction form
444.08/665.21 = 260.92/x - Step 3: Cross multiply
444.08x = 665.21 × 260.92 - Step 4: Simplify right side
444.08x = 173,568.08 - Step 5: Solve for x
x = 173,568.08/444.08 - Step 6: Final answer
x = 390.85
Related Problems
Find fourth proportional to 222.04, 332.61 and 130.46
Half scale
Find fourth proportional to 888.17, 1,330.43 and 521.84
Double scale
Find fourth proportional to 445.08, 666.71 and 261.92
Similar ratio
Find fourth proportional to 666.12, 997.82 and 391.38
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.