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Finding the Fourth Proportional to 319.34, 479.21 and 182.65

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Solution

The fourth proportional to 319.34, 479.21 and 182.65 is: 274.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    319.34 : 479.21 = 182.65 : x
  2. Step 2: Convert to fraction form
    319.34/479.21 = 182.65/x
  3. Step 3: Cross multiply
    319.34x = 479.21 × 182.65
  4. Step 4: Simplify right side
    319.34x = 87,527.71
  5. Step 5: Solve for x
    x = 87,527.71/319.34
  6. Step 6: Final answer
    x = 274.09

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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.