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Finding the Fourth Proportional to 351.21, 527.76 and 189.01

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Solution

The fourth proportional to 351.21, 527.76 and 189.01 is: 284.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.21 : 527.76 = 189.01 : x
  2. Step 2: Convert to fraction form
    351.21/527.76 = 189.01/x
  3. Step 3: Cross multiply
    351.21x = 527.76 × 189.01
  4. Step 4: Simplify right side
    351.21x = 99,751.92
  5. Step 5: Solve for x
    x = 99,751.92/351.21
  6. Step 6: Final answer
    x = 284.02

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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.