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Finding the Fourth Proportional to 631.41, 871.02 and 369.25

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Solution

The fourth proportional to 631.41, 871.02 and 369.25 is: 509.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.41 : 871.02 = 369.25 : x
  2. Step 2: Convert to fraction form
    631.41/871.02 = 369.25/x
  3. Step 3: Cross multiply
    631.41x = 871.02 × 369.25
  4. Step 4: Simplify right side
    631.41x = 321,624.14
  5. Step 5: Solve for x
    x = 321,624.14/631.41
  6. Step 6: Final answer
    x = 509.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.