Finding the Fourth Proportional to 369.80, 554.35 and 186.99
Calculator
Solution
The fourth proportional to 369.80, 554.35 and 186.99 is: 280.31
Step by Step Solution
- Step 1: Write the proportion equation
369.80 : 554.35 = 186.99 : x - Step 2: Convert to fraction form
369.80/554.35 = 186.99/x - Step 3: Cross multiply
369.80x = 554.35 × 186.99 - Step 4: Simplify right side
369.80x = 103,657.91 - Step 5: Solve for x
x = 103,657.91/369.80 - Step 6: Final answer
x = 280.31
Related Problems
Find fourth proportional to 184.90, 277.18 and 93.50
Half scale
Find fourth proportional to 739.60, 1,108.70 and 373.98
Double scale
Find fourth proportional to 370.80, 555.85 and 187.99
Similar ratio
Find fourth proportional to 554.70, 831.53 and 280.49
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.