Finding the Fourth Proportional to 265.31, 398.00 and 82.65
Calculator
Solution
The fourth proportional to 265.31, 398.00 and 82.65 is: 123.99
Step by Step Solution
- Step 1: Write the proportion equation
265.31 : 398.00 = 82.65 : x - Step 2: Convert to fraction form
265.31/398.00 = 82.65/x - Step 3: Cross multiply
265.31x = 398.00 × 82.65 - Step 4: Simplify right side
265.31x = 32,894.29 - Step 5: Solve for x
x = 32,894.29/265.31 - Step 6: Final answer
x = 123.99
Related Problems
Find fourth proportional to 132.65, 199.00 and 41.33
Half scale
Find fourth proportional to 530.61, 795.99 and 165.30
Double scale
Find fourth proportional to 266.31, 399.50 and 83.65
Similar ratio
Find fourth proportional to 397.96, 596.99 and 123.98
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.