Finding the Fourth Proportional to 945.70, 1,304.99 and 552.68
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Solution
The fourth proportional to 945.70, 1,304.99 and 552.68 is: 762.65
Step by Step Solution
- Step 1: Write the proportion equation
945.70 : 1,304.99 = 552.68 : x - Step 2: Convert to fraction form
945.70/1,304.99 = 552.68/x - Step 3: Cross multiply
945.70x = 1,304.99 × 552.68 - Step 4: Simplify right side
945.70x = 721,241.87 - Step 5: Solve for x
x = 721,241.87/945.70 - Step 6: Final answer
x = 762.65
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1.5x scale
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.