Finding the Third Proportional to 690 and 739.50
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Solution
The third proportional to 690 and 739.50 is: 792.55
Step by Step Solution
- Step 1: Write the proportion equation
690 : 739.50 = 739.50 : x - Step 2: Convert to fraction form
690/739.50 = 739.50/x - Step 3: Cross multiply
690x = 739.50 × 739.50 - Step 4: Simplify right side
690x = 546,860.25 - Step 5: Solve for x
x = 546,860.25/690 - Step 6: Final answer
x = 792.55
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These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.