Finding the Fourth Proportional to 315.99, 473.97 and 84.87
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Solution
The fourth proportional to 315.99, 473.97 and 84.87 is: 127.30
Step by Step Solution
- Step 1: Write the proportion equation
315.99 : 473.97 = 84.87 : x - Step 2: Convert to fraction form
315.99/473.97 = 84.87/x - Step 3: Cross multiply
315.99x = 473.97 × 84.87 - Step 4: Simplify right side
315.99x = 40,225.41 - Step 5: Solve for x
x = 40,225.41/315.99 - Step 6: Final answer
x = 127.30
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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.