Finding the Fourth Proportional to 225.99, 339.37 and 139.84
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Solution
The fourth proportional to 225.99, 339.37 and 139.84 is: 209.99
Step by Step Solution
- Step 1: Write the proportion equation
225.99 : 339.37 = 139.84 : x - Step 2: Convert to fraction form
225.99/339.37 = 139.84/x - Step 3: Cross multiply
225.99x = 339.37 × 139.84 - Step 4: Simplify right side
225.99x = 47,456.15 - Step 5: Solve for x
x = 47,456.15/225.99 - Step 6: Final answer
x = 209.99
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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.