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Finding the Fourth Proportional to 346.12, 519.20 and 102.68

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Solution

The fourth proportional to 346.12, 519.20 and 102.68 is: 154.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.12 : 519.20 = 102.68 : x
  2. Step 2: Convert to fraction form
    346.12/519.20 = 102.68/x
  3. Step 3: Cross multiply
    346.12x = 519.20 × 102.68
  4. Step 4: Simplify right side
    346.12x = 53,311.46
  5. Step 5: Solve for x
    x = 53,311.46/346.12
  6. Step 6: Final answer
    x = 154.03

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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.