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Finding the Fourth Proportional to 483.34, 666.74 and 306.38

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Solution

The fourth proportional to 483.34, 666.74 and 306.38 is: 422.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.34 : 666.74 = 306.38 : x
  2. Step 2: Convert to fraction form
    483.34/666.74 = 306.38/x
  3. Step 3: Cross multiply
    483.34x = 666.74 × 306.38
  4. Step 4: Simplify right side
    483.34x = 204,275.80
  5. Step 5: Solve for x
    x = 204,275.80/483.34
  6. Step 6: Final answer
    x = 422.63

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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.