Finding the Fourth Proportional to 1,419.68, 2,129.16 and 650
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Solution
The fourth proportional to 1,419.68, 2,129.16 and 650 is: 974.84
Step by Step Solution
- Step 1: Write the proportion equation
1,419.68 : 2,129.16 = 650 : x - Step 2: Convert to fraction form
1,419.68/2,129.16 = 650/x - Step 3: Cross multiply
1,419.68x = 2,129.16 × 650 - Step 4: Simplify right side
1,419.68x = 1,383,954 - Step 5: Solve for x
x = 1,383,954/1,419.68 - Step 6: Final answer
x = 974.84
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.