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Finding the Fourth Proportional to 636.86, 879.05 and 375.03

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Solution

The fourth proportional to 636.86, 879.05 and 375.03 is: 517.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.86 : 879.05 = 375.03 : x
  2. Step 2: Convert to fraction form
    636.86/879.05 = 375.03/x
  3. Step 3: Cross multiply
    636.86x = 879.05 × 375.03
  4. Step 4: Simplify right side
    636.86x = 329,671.06
  5. Step 5: Solve for x
    x = 329,671.06/636.86
  6. Step 6: Final answer
    x = 517.65

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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.