Finding the Fourth Proportional to 135.10, 202.62 and 66.58
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Solution
The fourth proportional to 135.10, 202.62 and 66.58 is: 99.85
Step by Step Solution
- Step 1: Write the proportion equation
135.10 : 202.62 = 66.58 : x - Step 2: Convert to fraction form
135.10/202.62 = 66.58/x - Step 3: Cross multiply
135.10x = 202.62 × 66.58 - Step 4: Simplify right side
135.10x = 13,490.18 - Step 5: Solve for x
x = 13,490.18/135.10 - Step 6: Final answer
x = 99.85
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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.