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Finding the Fourth Proportional to 346.28, 519.52 and 115.22

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Solution

The fourth proportional to 346.28, 519.52 and 115.22 is: 172.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.28 : 519.52 = 115.22 : x
  2. Step 2: Convert to fraction form
    346.28/519.52 = 115.22/x
  3. Step 3: Cross multiply
    346.28x = 519.52 × 115.22
  4. Step 4: Simplify right side
    346.28x = 59,859.09
  5. Step 5: Solve for x
    x = 59,859.09/346.28
  6. Step 6: Final answer
    x = 172.86

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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.