Finding the Fourth Proportional to 373.18, 561.76 and 286.99
Calculator
Solution
The fourth proportional to 373.18, 561.76 and 286.99 is: 432.02
Step by Step Solution
- Step 1: Write the proportion equation
373.18 : 561.76 = 286.99 : x - Step 2: Convert to fraction form
373.18/561.76 = 286.99/x - Step 3: Cross multiply
373.18x = 561.76 × 286.99 - Step 4: Simplify right side
373.18x = 161,219.50 - Step 5: Solve for x
x = 161,219.50/373.18 - Step 6: Final answer
x = 432.02
Related Problems
Find fourth proportional to 186.59, 280.88 and 143.50
Half scale
Find fourth proportional to 746.36, 1,123.52 and 573.98
Double scale
Find fourth proportional to 374.18, 563.27 and 287.99
Similar ratio
Find fourth proportional to 559.77, 842.64 and 430.49
1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.