Finding the Fourth Proportional to 1,011.24, 1,394.68 and 618
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Solution
The fourth proportional to 1,011.24, 1,394.68 and 618 is: 852.33
Step by Step Solution
- Step 1: Write the proportion equation
1,011.24 : 1,394.68 = 618 : x - Step 2: Convert to fraction form
1,011.24/1,394.68 = 618/x - Step 3: Cross multiply
1,011.24x = 1,394.68 × 618 - Step 4: Simplify right side
1,011.24x = 861,912.24 - Step 5: Solve for x
x = 861,912.24/1,011.24 - Step 6: Final answer
x = 852.33
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.