Finding the Fourth Proportional to 60.78, 83.88 and 47.82
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Solution
The fourth proportional to 60.78, 83.88 and 47.82 is: 65.99
Step by Step Solution
- Step 1: Write the proportion equation
60.78 : 83.88 = 47.82 : x - Step 2: Convert to fraction form
60.78/83.88 = 47.82/x - Step 3: Cross multiply
60.78x = 83.88 × 47.82 - Step 4: Simplify right side
60.78x = 4,011.14 - Step 5: Solve for x
x = 4,011.14/60.78 - Step 6: Final answer
x = 65.99
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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.