Finding the Fourth Proportional to 69.63, 96.12 and 53.34
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Solution
The fourth proportional to 69.63, 96.12 and 53.34 is: 73.63
Step by Step Solution
- Step 1: Write the proportion equation
69.63 : 96.12 = 53.34 : x - Step 2: Convert to fraction form
69.63/96.12 = 53.34/x - Step 3: Cross multiply
69.63x = 96.12 × 53.34 - Step 4: Simplify right side
69.63x = 5,127.04 - Step 5: Solve for x
x = 5,127.04/69.63 - Step 6: Final answer
x = 73.63
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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.