Finding the Fourth Proportional to 215.08, 322.61 and 52.76
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Solution
The fourth proportional to 215.08, 322.61 and 52.76 is: 79.14
Step by Step Solution
- Step 1: Write the proportion equation
215.08 : 322.61 = 52.76 : x - Step 2: Convert to fraction form
215.08/322.61 = 52.76/x - Step 3: Cross multiply
215.08x = 322.61 × 52.76 - Step 4: Simplify right side
215.08x = 17,020.90 - Step 5: Solve for x
x = 17,020.90/215.08 - Step 6: Final answer
x = 79.14
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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.