Finding the Fourth Proportional to 56.88, 78.48 and 45.99
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Solution
The fourth proportional to 56.88, 78.48 and 45.99 is: 63.45
Step by Step Solution
- Step 1: Write the proportion equation
56.88 : 78.48 = 45.99 : x - Step 2: Convert to fraction form
56.88/78.48 = 45.99/x - Step 3: Cross multiply
56.88x = 78.48 × 45.99 - Step 4: Simplify right side
56.88x = 3,609.30 - Step 5: Solve for x
x = 3,609.30/56.88 - Step 6: Final answer
x = 63.45
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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.