Finding the Fourth Proportional to 365.19, 503.95 and 207.81
Calculator
Solution
The fourth proportional to 365.19, 503.95 and 207.81 is: 286.76
Step by Step Solution
- Step 1: Write the proportion equation
365.19 : 503.95 = 207.81 : x - Step 2: Convert to fraction form
365.19/503.95 = 207.81/x - Step 3: Cross multiply
365.19x = 503.95 × 207.81 - Step 4: Simplify right side
365.19x = 104,723.44 - Step 5: Solve for x
x = 104,723.44/365.19 - Step 6: Final answer
x = 286.76
Related Problems
Find fourth proportional to 182.60, 251.97 and 103.90
Half scale
Find fourth proportional to 730.39, 1,007.90 and 415.61
Double scale
Find fourth proportional to 366.19, 505.33 and 208.81
Similar ratio
Find fourth proportional to 547.79, 755.92 and 311.71
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.