Finding the Fourth Proportional to 309.93, 465.12 and 228.99
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Solution
The fourth proportional to 309.93, 465.12 and 228.99 is: 343.65
Step by Step Solution
- Step 1: Write the proportion equation
309.93 : 465.12 = 228.99 : x - Step 2: Convert to fraction form
309.93/465.12 = 228.99/x - Step 3: Cross multiply
309.93x = 465.12 × 228.99 - Step 4: Simplify right side
309.93x = 106,507.83 - Step 5: Solve for x
x = 106,507.83/309.93 - Step 6: Final answer
x = 343.65
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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.