Finding the Fourth Proportional to 339.44, 509.20 and 122.96
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Solution
The fourth proportional to 339.44, 509.20 and 122.96 is: 184.45
Step by Step Solution
- Step 1: Write the proportion equation
339.44 : 509.20 = 122.96 : x - Step 2: Convert to fraction form
339.44/509.20 = 122.96/x - Step 3: Cross multiply
339.44x = 509.20 × 122.96 - Step 4: Simplify right side
339.44x = 62,611.23 - Step 5: Solve for x
x = 62,611.23/339.44 - Step 6: Final answer
x = 184.45
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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.