Finding the Fourth Proportional to 885.82, 1,217.44 and 688.99
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Solution
The fourth proportional to 885.82, 1,217.44 and 688.99 is: 946.92
Step by Step Solution
- Step 1: Write the proportion equation
885.82 : 1,217.44 = 688.99 : x - Step 2: Convert to fraction form
885.82/1,217.44 = 688.99/x - Step 3: Cross multiply
885.82x = 1,217.44 × 688.99 - Step 4: Simplify right side
885.82x = 838,803.99 - Step 5: Solve for x
x = 838,803.99/885.82 - Step 6: Final answer
x = 946.92
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Double scale
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.