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Finding the Fourth Proportional to 577.60, 865.92 and 529.60

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Solution

The fourth proportional to 577.60, 865.92 and 529.60 is: 793.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    577.60 : 865.92 = 529.60 : x
  2. Step 2: Convert to fraction form
    577.60/865.92 = 529.60/x
  3. Step 3: Cross multiply
    577.60x = 865.92 × 529.60
  4. Step 4: Simplify right side
    577.60x = 458,591.23
  5. Step 5: Solve for x
    x = 458,591.23/577.60
  6. Step 6: Final answer
    x = 793.96

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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.