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Finding the Fourth Proportional to 549.07, 757.82 and 328.09

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Solution

The fourth proportional to 549.07, 757.82 and 328.09 is: 452.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.07 : 757.82 = 328.09 : x
  2. Step 2: Convert to fraction form
    549.07/757.82 = 328.09/x
  3. Step 3: Cross multiply
    549.07x = 757.82 × 328.09
  4. Step 4: Simplify right side
    549.07x = 248,633.16
  5. Step 5: Solve for x
    x = 248,633.16/549.07
  6. Step 6: Final answer
    x = 452.83

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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.