Finding the Fourth Proportional to 315.19, 472.81 and 106.99
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Solution
The fourth proportional to 315.19, 472.81 and 106.99 is: 160.49
Step by Step Solution
- Step 1: Write the proportion equation
315.19 : 472.81 = 106.99 : x - Step 2: Convert to fraction form
315.19/472.81 = 106.99/x - Step 3: Cross multiply
315.19x = 472.81 × 106.99 - Step 4: Simplify right side
315.19x = 50,585.94 - Step 5: Solve for x
x = 50,585.94/315.19 - Step 6: Final answer
x = 160.49
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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.