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Finding the Fourth Proportional to 575.51, 862.37 and 331.31

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Solution

The fourth proportional to 575.51, 862.37 and 331.31 is: 496.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    575.51 : 862.37 = 331.31 : x
  2. Step 2: Convert to fraction form
    575.51/862.37 = 331.31/x
  3. Step 3: Cross multiply
    575.51x = 862.37 × 331.31
  4. Step 4: Simplify right side
    575.51x = 285,710.15
  5. Step 5: Solve for x
    x = 285,710.15/575.51
  6. Step 6: Final answer
    x = 496.45

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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.