Finding the Fourth Proportional to 564.20, 778.68 and 368
Calculator
Solution
The fourth proportional to 564.20, 778.68 and 368 is: 507.89
Step by Step Solution
- Step 1: Write the proportion equation
564.20 : 778.68 = 368 : x - Step 2: Convert to fraction form
564.20/778.68 = 368/x - Step 3: Cross multiply
564.20x = 778.68 × 368 - Step 4: Simplify right side
564.20x = 286,554.24 - Step 5: Solve for x
x = 286,554.24/564.20 - Step 6: Final answer
x = 507.89
Related Problems
Find fourth proportional to 282.10, 389.34 and 184
Half scale
Find fourth proportional to 1,128.40, 1,557.36 and 736
Double scale
Find fourth proportional to 565.20, 780.06 and 369
Similar ratio
Find fourth proportional to 846.30, 1,168.02 and 552
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.