Finding the Fourth Proportional to 707.11, 974.98 and 490.99
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Solution
The fourth proportional to 707.11, 974.98 and 490.99 is: 676.99
Step by Step Solution
- Step 1: Write the proportion equation
707.11 : 974.98 = 490.99 : x - Step 2: Convert to fraction form
707.11/974.98 = 490.99/x - Step 3: Cross multiply
707.11x = 974.98 × 490.99 - Step 4: Simplify right side
707.11x = 478,705.43 - Step 5: Solve for x
x = 478,705.43/707.11 - Step 6: Final answer
x = 676.99
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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.