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Finding the Fourth Proportional to 636.76, 879.70 and 544.46

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Solution

The fourth proportional to 636.76, 879.70 and 544.46 is: 752.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.76 : 879.70 = 544.46 : x
  2. Step 2: Convert to fraction form
    636.76/879.70 = 544.46/x
  3. Step 3: Cross multiply
    636.76x = 879.70 × 544.46
  4. Step 4: Simplify right side
    636.76x = 478,961.46
  5. Step 5: Solve for x
    x = 478,961.46/636.76
  6. Step 6: Final answer
    x = 752.19

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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.