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Finding the Fourth Proportional to 306.99, 423.75 and 182.69

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Solution

The fourth proportional to 306.99, 423.75 and 182.69 is: 252.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    306.99 : 423.75 = 182.69 : x
  2. Step 2: Convert to fraction form
    306.99/423.75 = 182.69/x
  3. Step 3: Cross multiply
    306.99x = 423.75 × 182.69
  4. Step 4: Simplify right side
    306.99x = 77,414.02
  5. Step 5: Solve for x
    x = 77,414.02/306.99
  6. Step 6: Final answer
    x = 252.17

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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.