Finding the Fourth Proportional to 315.99, 474.08 and 120.99
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Solution
The fourth proportional to 315.99, 474.08 and 120.99 is: 181.52
Step by Step Solution
- Step 1: Write the proportion equation
315.99 : 474.08 = 120.99 : x - Step 2: Convert to fraction form
315.99/474.08 = 120.99/x - Step 3: Cross multiply
315.99x = 474.08 × 120.99 - Step 4: Simplify right side
315.99x = 57,358.33 - Step 5: Solve for x
x = 57,358.33/315.99 - Step 6: Final answer
x = 181.52
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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.