Finding the Fourth Proportional to 987.70, 1,481.44 and 524.99
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Solution
The fourth proportional to 987.70, 1,481.44 and 524.99 is: 787.42
Step by Step Solution
- Step 1: Write the proportion equation
987.70 : 1,481.44 = 524.99 : x - Step 2: Convert to fraction form
987.70/1,481.44 = 524.99/x - Step 3: Cross multiply
987.70x = 1,481.44 × 524.99 - Step 4: Simplify right side
987.70x = 777,733.78 - Step 5: Solve for x
x = 777,733.78/987.70 - Step 6: Final answer
x = 787.42
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.