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Finding the Fourth Proportional to 829.41, 1,244.26 and 412.97

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Solution

The fourth proportional to 829.41, 1,244.26 and 412.97 is: 619.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    829.41 : 1,244.26 = 412.97 : x
  2. Step 2: Convert to fraction form
    829.41/1,244.26 = 412.97/x
  3. Step 3: Cross multiply
    829.41x = 1,244.26 × 412.97
  4. Step 4: Simplify right side
    829.41x = 513,842.05
  5. Step 5: Solve for x
    x = 513,842.05/829.41
  6. Step 6: Final answer
    x = 619.53

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1.5x scale

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.