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Finding the Fourth Proportional to 636.03, 877.68 and 383.96

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Solution

The fourth proportional to 636.03, 877.68 and 383.96 is: 529.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.03 : 877.68 = 383.96 : x
  2. Step 2: Convert to fraction form
    636.03/877.68 = 383.96/x
  3. Step 3: Cross multiply
    636.03x = 877.68 × 383.96
  4. Step 4: Simplify right side
    636.03x = 336,989.62
  5. Step 5: Solve for x
    x = 336,989.62/636.03
  6. Step 6: Final answer
    x = 529.83

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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.