Finding the Fourth Proportional to 707.49, 976.33 and 396.99
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Solution
The fourth proportional to 707.49, 976.33 and 396.99 is: 547.84
Step by Step Solution
- Step 1: Write the proportion equation
707.49 : 976.33 = 396.99 : x - Step 2: Convert to fraction form
707.49/976.33 = 396.99/x - Step 3: Cross multiply
707.49x = 976.33 × 396.99 - Step 4: Simplify right side
707.49x = 387,593.74 - Step 5: Solve for x
x = 387,593.74/707.49 - Step 6: Final answer
x = 547.84
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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.