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Finding the Fourth Proportional to 577.39, 865.79 and 252.68

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Solution

The fourth proportional to 577.39, 865.79 and 252.68 is: 378.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.39 : 865.79 = 252.68 : x
  2. Step 2: Convert to fraction form
    577.39/865.79 = 252.68/x
  3. Step 3: Cross multiply
    577.39x = 865.79 × 252.68
  4. Step 4: Simplify right side
    577.39x = 218,768.72
  5. Step 5: Solve for x
    x = 218,768.72/577.39
  6. Step 6: Final answer
    x = 378.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.