Finding the Fourth Proportional to 351.21, 526.86 and 107.79
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Solution
The fourth proportional to 351.21, 526.86 and 107.79 is: 161.70
Step by Step Solution
- Step 1: Write the proportion equation
351.21 : 526.86 = 107.79 : x - Step 2: Convert to fraction form
351.21/526.86 = 107.79/x - Step 3: Cross multiply
351.21x = 526.86 × 107.79 - Step 4: Simplify right side
351.21x = 56,790.24 - Step 5: Solve for x
x = 56,790.24/351.21 - Step 6: Final answer
x = 161.70
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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.