Finding the Fourth Proportional to 523.62, 721.08 and 497.70
Calculator
Solution
The fourth proportional to 523.62, 721.08 and 497.70 is: 685.39
Step by Step Solution
- Step 1: Write the proportion equation
523.62 : 721.08 = 497.70 : x - Step 2: Convert to fraction form
523.62/721.08 = 497.70/x - Step 3: Cross multiply
523.62x = 721.08 × 497.70 - Step 4: Simplify right side
523.62x = 358,881.52 - Step 5: Solve for x
x = 358,881.52/523.62 - Step 6: Final answer
x = 685.39
Related Problems
Find fourth proportional to 261.81, 360.54 and 248.85
Half scale
Find fourth proportional to 1,047.24, 1,442.16 and 995.40
Double scale
Find fourth proportional to 524.62, 722.46 and 498.70
Similar ratio
Find fourth proportional to 785.43, 1,081.62 and 746.55
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.