Finding the Fourth Proportional to 688.96, 952 and 493.12
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Solution
The fourth proportional to 688.96, 952 and 493.12 is: 681.39
Step by Step Solution
- Step 1: Write the proportion equation
688.96 : 952 = 493.12 : x - Step 2: Convert to fraction form
688.96/952 = 493.12/x - Step 3: Cross multiply
688.96x = 952 × 493.12 - Step 4: Simplify right side
688.96x = 469,450.24 - Step 5: Solve for x
x = 469,450.24/688.96 - Step 6: Final answer
x = 681.39
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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.