Finding the Third Proportional to 554 and 640
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Solution
The third proportional to 554 and 640 is: 739.35
Step by Step Solution
- Step 1: Write the proportion equation
554 : 640 = 640 : x - Step 2: Convert to fraction form
554/640 = 640/x - Step 3: Cross multiply
554x = 640 × 640 - Step 4: Simplify right side
554x = 409,600 - Step 5: Solve for x
x = 409,600/554 - Step 6: Final answer
x = 739.35
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These problems maintain the same ratio (1.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.