Finding the Fourth Proportional to 52.48, 78.75 and 38.99
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Solution
The fourth proportional to 52.48, 78.75 and 38.99 is: 58.50
Step by Step Solution
- Step 1: Write the proportion equation
52.48 : 78.75 = 38.99 : x - Step 2: Convert to fraction form
52.48/78.75 = 38.99/x - Step 3: Cross multiply
52.48x = 78.75 × 38.99 - Step 4: Simplify right side
52.48x = 3,069.87 - Step 5: Solve for x
x = 3,069.87/52.48 - Step 6: Final answer
x = 58.50
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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.