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Finding the Fourth Proportional to 346.50, 519.69 and 103.05

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Solution

The fourth proportional to 346.50, 519.69 and 103.05 is: 154.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.50 : 519.69 = 103.05 : x
  2. Step 2: Convert to fraction form
    346.50/519.69 = 103.05/x
  3. Step 3: Cross multiply
    346.50x = 519.69 × 103.05
  4. Step 4: Simplify right side
    346.50x = 53,554.05
  5. Step 5: Solve for x
    x = 53,554.05/346.50
  6. Step 6: Final answer
    x = 154.56

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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.