Finding the Fourth Proportional to 953.70, 1,313.19 and 717.99
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Solution
The fourth proportional to 953.70, 1,313.19 and 717.99 is: 988.63
Step by Step Solution
- Step 1: Write the proportion equation
953.70 : 1,313.19 = 717.99 : x - Step 2: Convert to fraction form
953.70/1,313.19 = 717.99/x - Step 3: Cross multiply
953.70x = 1,313.19 × 717.99 - Step 4: Simplify right side
953.70x = 942,857.29 - Step 5: Solve for x
x = 942,857.29/953.70 - Step 6: Final answer
x = 988.63
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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.