Finding the Fourth Proportional to 101.30, 151.71 and 69.14
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Solution
The fourth proportional to 101.30, 151.71 and 69.14 is: 103.55
Step by Step Solution
- Step 1: Write the proportion equation
101.30 : 151.71 = 69.14 : x - Step 2: Convert to fraction form
101.30/151.71 = 69.14/x - Step 3: Cross multiply
101.30x = 151.71 × 69.14 - Step 4: Simplify right side
101.30x = 10,489.23 - Step 5: Solve for x
x = 10,489.23/101.30 - Step 6: Final answer
x = 103.55
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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.