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Finding the Fourth Proportional to 631.98, 948.09 and 343.26

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Solution

The fourth proportional to 631.98, 948.09 and 343.26 is: 514.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    631.98 : 948.09 = 343.26 : x
  2. Step 2: Convert to fraction form
    631.98/948.09 = 343.26/x
  3. Step 3: Cross multiply
    631.98x = 948.09 × 343.26
  4. Step 4: Simplify right side
    631.98x = 325,441.37
  5. Step 5: Solve for x
    x = 325,441.37/631.98
  6. Step 6: Final answer
    x = 514.96

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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.