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Finding the Fourth Proportional to 636.38, 950.37 and 549.89

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Solution

The fourth proportional to 636.38, 950.37 and 549.89 is: 821.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.38 : 950.37 = 549.89 : x
  2. Step 2: Convert to fraction form
    636.38/950.37 = 549.89/x
  3. Step 3: Cross multiply
    636.38x = 950.37 × 549.89
  4. Step 4: Simplify right side
    636.38x = 522,594.21
  5. Step 5: Solve for x
    x = 522,594.21/636.38
  6. Step 6: Final answer
    x = 821.20

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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.