Finding the Fourth Proportional to 453.84, 625.68 and 304.40
Calculator
Solution
The fourth proportional to 453.84, 625.68 and 304.40 is: 419.66
Step by Step Solution
- Step 1: Write the proportion equation
453.84 : 625.68 = 304.40 : x - Step 2: Convert to fraction form
453.84/625.68 = 304.40/x - Step 3: Cross multiply
453.84x = 625.68 × 304.40 - Step 4: Simplify right side
453.84x = 190,456.99 - Step 5: Solve for x
x = 190,456.99/453.84 - Step 6: Final answer
x = 419.66
Related Problems
Find fourth proportional to 226.92, 312.84 and 152.20
Half scale
Find fourth proportional to 907.68, 1,251.36 and 608.80
Double scale
Find fourth proportional to 454.84, 627.06 and 305.40
Similar ratio
Find fourth proportional to 680.76, 938.52 and 456.60
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.