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Finding the Fourth Proportional to 549.38, 758.04 and 328.28

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Solution

The fourth proportional to 549.38, 758.04 and 328.28 is: 452.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.38 : 758.04 = 328.28 : x
  2. Step 2: Convert to fraction form
    549.38/758.04 = 328.28/x
  3. Step 3: Cross multiply
    549.38x = 758.04 × 328.28
  4. Step 4: Simplify right side
    549.38x = 248,849.37
  5. Step 5: Solve for x
    x = 248,849.37/549.38
  6. Step 6: Final answer
    x = 452.96

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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.