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Finding the Fourth Proportional to 631.96, 871.99 and 366.33

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Solution

The fourth proportional to 631.96, 871.99 and 366.33 is: 505.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.96 : 871.99 = 366.33 : x
  2. Step 2: Convert to fraction form
    631.96/871.99 = 366.33/x
  3. Step 3: Cross multiply
    631.96x = 871.99 × 366.33
  4. Step 4: Simplify right side
    631.96x = 319,435.18
  5. Step 5: Solve for x
    x = 319,435.18/631.96
  6. Step 6: Final answer
    x = 505.47

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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.