Finding the Fourth Proportional to 989.19, 1,365.08 and 547.09
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Solution
The fourth proportional to 989.19, 1,365.08 and 547.09 is: 754.98
Step by Step Solution
- Step 1: Write the proportion equation
989.19 : 1,365.08 = 547.09 : x - Step 2: Convert to fraction form
989.19/1,365.08 = 547.09/x - Step 3: Cross multiply
989.19x = 1,365.08 × 547.09 - Step 4: Simplify right side
989.19x = 746,821.62 - Step 5: Solve for x
x = 746,821.62/989.19 - Step 6: Final answer
x = 754.98
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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.