Finding the Third Proportional to 430 and 638
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Solution
The third proportional to 430 and 638 is: 946.61
Step by Step Solution
- Step 1: Write the proportion equation
430 : 638 = 638 : x - Step 2: Convert to fraction form
430/638 = 638/x - Step 3: Cross multiply
430x = 638 × 638 - Step 4: Simplify right side
430x = 407,044 - Step 5: Solve for x
x = 407,044/430 - Step 6: Final answer
x = 946.61
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These problems maintain the same ratio (1.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.