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Finding the Fourth Proportional to 495.45, 683.97 and 348.87

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Solution

The fourth proportional to 495.45, 683.97 and 348.87 is: 481.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.45 : 683.97 = 348.87 : x
  2. Step 2: Convert to fraction form
    495.45/683.97 = 348.87/x
  3. Step 3: Cross multiply
    495.45x = 683.97 × 348.87
  4. Step 4: Simplify right side
    495.45x = 238,616.61
  5. Step 5: Solve for x
    x = 238,616.61/495.45
  6. Step 6: Final answer
    x = 481.62

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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.