Finding the Third Proportional to 451 and 1,120
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Solution
The third proportional to 451 and 1,120 is: 2,781.37
Step by Step Solution
- Step 1: Write the proportion equation
451 : 1,120 = 1,120 : x - Step 2: Convert to fraction form
451/1,120 = 1,120/x - Step 3: Cross multiply
451x = 1,120 × 1,120 - Step 4: Simplify right side
451x = 1,254,400 - Step 5: Solve for x
x = 1,254,400/451 - Step 6: Final answer
x = 2,781.37
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These problems maintain the same ratio (2.48) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.