Finding the Third Proportional to 430 and 528
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Solution
The third proportional to 430 and 528 is: 648.33
Step by Step Solution
- Step 1: Write the proportion equation
430 : 528 = 528 : x - Step 2: Convert to fraction form
430/528 = 528/x - Step 3: Cross multiply
430x = 528 × 528 - Step 4: Simplify right side
430x = 278,784 - Step 5: Solve for x
x = 278,784/430 - Step 6: Final answer
x = 648.33
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Why These Related Problems?
These problems maintain the same ratio (1.23) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.