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Finding the Fourth Proportional to 495.63, 683.96 and 299.19

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Solution

The fourth proportional to 495.63, 683.96 and 299.19 is: 412.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    495.63 : 683.96 = 299.19 : x
  2. Step 2: Convert to fraction form
    495.63/683.96 = 299.19/x
  3. Step 3: Cross multiply
    495.63x = 683.96 × 299.19
  4. Step 4: Simplify right side
    495.63x = 204,631.32
  5. Step 5: Solve for x
    x = 204,631.32/495.63
  6. Step 6: Final answer
    x = 412.88

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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.