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Finding the Fourth Proportional to 351.38, 526.92 and 120.21

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Solution

The fourth proportional to 351.38, 526.92 and 120.21 is: 180.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    351.38 : 526.92 = 120.21 : x
  2. Step 2: Convert to fraction form
    351.38/526.92 = 120.21/x
  3. Step 3: Cross multiply
    351.38x = 526.92 × 120.21
  4. Step 4: Simplify right side
    351.38x = 63,341.05
  5. Step 5: Solve for x
    x = 63,341.05/351.38
  6. Step 6: Final answer
    x = 180.27

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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.