Finding the Fourth Proportional to 971.10, 1,340.09 and 528.99
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Solution
The fourth proportional to 971.10, 1,340.09 and 528.99 is: 729.99
Step by Step Solution
- Step 1: Write the proportion equation
971.10 : 1,340.09 = 528.99 : x - Step 2: Convert to fraction form
971.10/1,340.09 = 528.99/x - Step 3: Cross multiply
971.10x = 1,340.09 × 528.99 - Step 4: Simplify right side
971.10x = 708,891.56 - Step 5: Solve for x
x = 708,891.56/971.10 - Step 6: Final answer
x = 729.99
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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.