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Finding the Fourth Proportional to 549.43, 820.63 and 451.37

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Solution

The fourth proportional to 549.43, 820.63 and 451.37 is: 674.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    549.43 : 820.63 = 451.37 : x
  2. Step 2: Convert to fraction form
    549.43/820.63 = 451.37/x
  3. Step 3: Cross multiply
    549.43x = 820.63 × 451.37
  4. Step 4: Simplify right side
    549.43x = 370,410.38
  5. Step 5: Solve for x
    x = 370,410.38/549.43
  6. Step 6: Final answer
    x = 674.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.