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Finding the Fourth Proportional to 631.83, 871.86 and 352.04

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Solution

The fourth proportional to 631.83, 871.86 and 352.04 is: 485.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.83 : 871.86 = 352.04 : x
  2. Step 2: Convert to fraction form
    631.83/871.86 = 352.04/x
  3. Step 3: Cross multiply
    631.83x = 871.86 × 352.04
  4. Step 4: Simplify right side
    631.83x = 306,930.01
  5. Step 5: Solve for x
    x = 306,930.01/631.83
  6. Step 6: Final answer
    x = 485.78

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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.