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Finding the Fourth Proportional to 631.14, 946.60 and 168.96

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Solution

The fourth proportional to 631.14, 946.60 and 168.96 is: 253.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.14 : 946.60 = 168.96 : x
  2. Step 2: Convert to fraction form
    631.14/946.60 = 168.96/x
  3. Step 3: Cross multiply
    631.14x = 946.60 × 168.96
  4. Step 4: Simplify right side
    631.14x = 159,937.54
  5. Step 5: Solve for x
    x = 159,937.54/631.14
  6. Step 6: Final answer
    x = 253.41

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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.