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Finding the Fourth Proportional to 575.56, 865.26 and 479.56

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Solution

The fourth proportional to 575.56, 865.26 and 479.56 is: 720.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.56 : 865.26 = 479.56 : x
  2. Step 2: Convert to fraction form
    575.56/865.26 = 479.56/x
  3. Step 3: Cross multiply
    575.56x = 865.26 × 479.56
  4. Step 4: Simplify right side
    575.56x = 414,944.09
  5. Step 5: Solve for x
    x = 414,944.09/575.56
  6. Step 6: Final answer
    x = 720.94

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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.