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Finding the Fourth Proportional to 333.24, 461.10 and 289.72

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Solution

The fourth proportional to 333.24, 461.10 and 289.72 is: 400.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    333.24 : 461.10 = 289.72 : x
  2. Step 2: Convert to fraction form
    333.24/461.10 = 289.72/x
  3. Step 3: Cross multiply
    333.24x = 461.10 × 289.72
  4. Step 4: Simplify right side
    333.24x = 133,589.89
  5. Step 5: Solve for x
    x = 133,589.89/333.24
  6. Step 6: Final answer
    x = 400.88

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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.