Finding the Fourth Proportional to 717.09, 987.71 and 550.99
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Solution
The fourth proportional to 717.09, 987.71 and 550.99 is: 758.92
Step by Step Solution
- Step 1: Write the proportion equation
717.09 : 987.71 = 550.99 : x - Step 2: Convert to fraction form
717.09/987.71 = 550.99/x - Step 3: Cross multiply
717.09x = 987.71 × 550.99 - Step 4: Simplify right side
717.09x = 544,215.58 - Step 5: Solve for x
x = 544,215.58/717.09 - Step 6: Final answer
x = 758.92
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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.