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Finding the Fourth Proportional to 636.58, 877.76 and 574.39

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Solution

The fourth proportional to 636.58, 877.76 and 574.39 is: 792.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    636.58 : 877.76 = 574.39 : x
  2. Step 2: Convert to fraction form
    636.58/877.76 = 574.39/x
  3. Step 3: Cross multiply
    636.58x = 877.76 × 574.39
  4. Step 4: Simplify right side
    636.58x = 504,178.56
  5. Step 5: Solve for x
    x = 504,178.56/636.58
  6. Step 6: Final answer
    x = 792.01

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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.