Finding the Fourth Proportional to 168.99, 253.47 and 87.99
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Solution
The fourth proportional to 168.99, 253.47 and 87.99 is: 131.98
Step by Step Solution
- Step 1: Write the proportion equation
168.99 : 253.47 = 87.99 : x - Step 2: Convert to fraction form
168.99/253.47 = 87.99/x - Step 3: Cross multiply
168.99x = 253.47 × 87.99 - Step 4: Simplify right side
168.99x = 22,302.83 - Step 5: Solve for x
x = 22,302.83/168.99 - Step 6: Final answer
x = 131.98
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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.