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Finding the Fourth Proportional to 307.99, 425.07 and 173.41

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Solution

The fourth proportional to 307.99, 425.07 and 173.41 is: 239.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    307.99 : 425.07 = 173.41 : x
  2. Step 2: Convert to fraction form
    307.99/425.07 = 173.41/x
  3. Step 3: Cross multiply
    307.99x = 425.07 × 173.41
  4. Step 4: Simplify right side
    307.99x = 73,711.39
  5. Step 5: Solve for x
    x = 73,711.39/307.99
  6. Step 6: Final answer
    x = 239.33

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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.