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Finding the Fourth Proportional to 693.82, 957.19 and 445.09

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Solution

The fourth proportional to 693.82, 957.19 and 445.09 is: 614.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    693.82 : 957.19 = 445.09 : x
  2. Step 2: Convert to fraction form
    693.82/957.19 = 445.09/x
  3. Step 3: Cross multiply
    693.82x = 957.19 × 445.09
  4. Step 4: Simplify right side
    693.82x = 426,028.69
  5. Step 5: Solve for x
    x = 426,028.69/693.82
  6. Step 6: Final answer
    x = 614.03

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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.