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Finding the Fourth Proportional to 662.49, 993.75 and 229.65

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Solution

The fourth proportional to 662.49, 993.75 and 229.65 is: 344.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    662.49 : 993.75 = 229.65 : x
  2. Step 2: Convert to fraction form
    662.49/993.75 = 229.65/x
  3. Step 3: Cross multiply
    662.49x = 993.75 × 229.65
  4. Step 4: Simplify right side
    662.49x = 228,214.69
  5. Step 5: Solve for x
    x = 228,214.69/662.49
  6. Step 6: Final answer
    x = 344.48

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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.