Finding the Fourth Proportional to 97.08, 133.78 and 79.64
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Solution
The fourth proportional to 97.08, 133.78 and 79.64 is: 109.75
Step by Step Solution
- Step 1: Write the proportion equation
97.08 : 133.78 = 79.64 : x - Step 2: Convert to fraction form
97.08/133.78 = 79.64/x - Step 3: Cross multiply
97.08x = 133.78 × 79.64 - Step 4: Simplify right side
97.08x = 10,654.24 - Step 5: Solve for x
x = 10,654.24/97.08 - Step 6: Final answer
x = 109.75
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.