Finding the Fourth Proportional to 168.71, 253.00 and 53.09
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Solution
The fourth proportional to 168.71, 253.00 and 53.09 is: 79.61
Step by Step Solution
- Step 1: Write the proportion equation
168.71 : 253.00 = 53.09 : x - Step 2: Convert to fraction form
168.71/253.00 = 53.09/x - Step 3: Cross multiply
168.71x = 253.00 × 53.09 - Step 4: Simplify right side
168.71x = 13,430.24 - Step 5: Solve for x
x = 13,430.24/168.71 - Step 6: Final answer
x = 79.61
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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.