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Finding the Fourth Proportional to 631.96, 947.34 and 323.56

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Solution

The fourth proportional to 631.96, 947.34 and 323.56 is: 485.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.96 : 947.34 = 323.56 : x
  2. Step 2: Convert to fraction form
    631.96/947.34 = 323.56/x
  3. Step 3: Cross multiply
    631.96x = 947.34 × 323.56
  4. Step 4: Simplify right side
    631.96x = 306,521.33
  5. Step 5: Solve for x
    x = 306,521.33/631.96
  6. Step 6: Final answer
    x = 485.03

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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.