Finding the Fourth Proportional to 331.74, 457.99 and 207.50
Calculator
Solution
The fourth proportional to 331.74, 457.99 and 207.50 is: 286.47
Step by Step Solution
- Step 1: Write the proportion equation
331.74 : 457.99 = 207.50 : x - Step 2: Convert to fraction form
331.74/457.99 = 207.50/x - Step 3: Cross multiply
331.74x = 457.99 × 207.50 - Step 4: Simplify right side
331.74x = 95,032.93 - Step 5: Solve for x
x = 95,032.93/331.74 - Step 6: Final answer
x = 286.47
Related Problems
Find fourth proportional to 165.87, 229.00 and 103.75
Half scale
Find fourth proportional to 663.47, 915.98 and 415
Double scale
Find fourth proportional to 332.74, 459.37 and 208.50
Similar ratio
Find fourth proportional to 497.60, 686.99 and 311.25
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.