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Finding the Fourth Proportional to 351.46, 527.46 and 207.28

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Solution

The fourth proportional to 351.46, 527.46 and 207.28 is: 311.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.46 : 527.46 = 207.28 : x
  2. Step 2: Convert to fraction form
    351.46/527.46 = 207.28/x
  3. Step 3: Cross multiply
    351.46x = 527.46 × 207.28
  4. Step 4: Simplify right side
    351.46x = 109,331.91
  5. Step 5: Solve for x
    x = 109,331.91/351.46
  6. Step 6: Final answer
    x = 311.08

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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.