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Finding the Fourth Proportional to 351.68, 527.65 and 189.14

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Solution

The fourth proportional to 351.68, 527.65 and 189.14 is: 283.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.68 : 527.65 = 189.14 : x
  2. Step 2: Convert to fraction form
    351.68/527.65 = 189.14/x
  3. Step 3: Cross multiply
    351.68x = 527.65 × 189.14
  4. Step 4: Simplify right side
    351.68x = 99,796.61
  5. Step 5: Solve for x
    x = 99,796.61/351.68
  6. Step 6: Final answer
    x = 283.78

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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.