Finding the Fourth Proportional to 130.29, 195.50 and 53.31
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Solution
The fourth proportional to 130.29, 195.50 and 53.31 is: 79.99
Step by Step Solution
- Step 1: Write the proportion equation
130.29 : 195.50 = 53.31 : x - Step 2: Convert to fraction form
130.29/195.50 = 53.31/x - Step 3: Cross multiply
130.29x = 195.50 × 53.31 - Step 4: Simplify right side
130.29x = 10,422.11 - Step 5: Solve for x
x = 10,422.11/130.29 - Step 6: Final answer
x = 79.99
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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.