Finding the Third Proportional to 430.50 and 905
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Solution
The third proportional to 430.50 and 905 is: 1,902.50
Step by Step Solution
- Step 1: Write the proportion equation
430.50 : 905 = 905 : x - Step 2: Convert to fraction form
430.50/905 = 905/x - Step 3: Cross multiply
430.50x = 905 × 905 - Step 4: Simplify right side
430.50x = 819,025 - Step 5: Solve for x
x = 819,025/430.50 - Step 6: Final answer
x = 1,902.50
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Why These Related Problems?
These problems maintain the same ratio (2.10) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.