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Finding the Fourth Proportional to 473.69, 654.09 and 308.19

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Solution

The fourth proportional to 473.69, 654.09 and 308.19 is: 425.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    473.69 : 654.09 = 308.19 : x
  2. Step 2: Convert to fraction form
    473.69/654.09 = 308.19/x
  3. Step 3: Cross multiply
    473.69x = 654.09 × 308.19
  4. Step 4: Simplify right side
    473.69x = 201,584.00
  5. Step 5: Solve for x
    x = 201,584.00/473.69
  6. Step 6: Final answer
    x = 425.56

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Double scale
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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.