Finding the Third Proportional to 278.50 and 505
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Solution
The third proportional to 278.50 and 505 is: 915.71
Step by Step Solution
- Step 1: Write the proportion equation
278.50 : 505 = 505 : x - Step 2: Convert to fraction form
278.50/505 = 505/x - Step 3: Cross multiply
278.50x = 505 × 505 - Step 4: Simplify right side
278.50x = 255,025 - Step 5: Solve for x
x = 255,025/278.50 - Step 6: Final answer
x = 915.71
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These problems maintain the same ratio (1.81) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.