Finding the Third Proportional to 430 and 520
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Solution
The third proportional to 430 and 520 is: 628.84
Step by Step Solution
- Step 1: Write the proportion equation
430 : 520 = 520 : x - Step 2: Convert to fraction form
430/520 = 520/x - Step 3: Cross multiply
430x = 520 × 520 - Step 4: Simplify right side
430x = 270,400 - Step 5: Solve for x
x = 270,400/430 - Step 6: Final answer
x = 628.84
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These problems maintain the same ratio (1.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.