Finding the Fourth Proportional to 130.11, 177.15 and 129.71
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Solution
The fourth proportional to 130.11, 177.15 and 129.71 is: 176.60
Step by Step Solution
- Step 1: Write the proportion equation
130.11 : 177.15 = 129.71 : x - Step 2: Convert to fraction form
130.11/177.15 = 129.71/x - Step 3: Cross multiply
130.11x = 177.15 × 129.71 - Step 4: Simplify right side
130.11x = 22,977.24 - Step 5: Solve for x
x = 22,977.24/130.11 - Step 6: Final answer
x = 176.60
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Why These Related Problems?
These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.