Finding the Fourth Proportional to 93.64, 129.18 and 58.65
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Solution
The fourth proportional to 93.64, 129.18 and 58.65 is: 80.91
Step by Step Solution
- Step 1: Write the proportion equation
93.64 : 129.18 = 58.65 : x - Step 2: Convert to fraction form
93.64/129.18 = 58.65/x - Step 3: Cross multiply
93.64x = 129.18 × 58.65 - Step 4: Simplify right side
93.64x = 7,576.41 - Step 5: Solve for x
x = 7,576.41/93.64 - Step 6: Final answer
x = 80.91
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.