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Finding the Fourth Proportional to 483.30, 666.29 and 306.18

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Solution

The fourth proportional to 483.30, 666.29 and 306.18 is: 422.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    483.30 : 666.29 = 306.18 : x
  2. Step 2: Convert to fraction form
    483.30/666.29 = 306.18/x
  3. Step 3: Cross multiply
    483.30x = 666.29 × 306.18
  4. Step 4: Simplify right side
    483.30x = 204,004.67
  5. Step 5: Solve for x
    x = 204,004.67/483.30
  6. Step 6: Final answer
    x = 422.11

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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.