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Finding the Fourth Proportional to 662.40, 994.08 and 229.92

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Solution

The fourth proportional to 662.40, 994.08 and 229.92 is: 345.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.40 : 994.08 = 229.92 : x
  2. Step 2: Convert to fraction form
    662.40/994.08 = 229.92/x
  3. Step 3: Cross multiply
    662.40x = 994.08 × 229.92
  4. Step 4: Simplify right side
    662.40x = 228,558.87
  5. Step 5: Solve for x
    x = 228,558.87/662.40
  6. Step 6: Final answer
    x = 345.05

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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.