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Finding the Fourth Proportional to 346.05, 518.78 and 163.32

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Solution

The fourth proportional to 346.05, 518.78 and 163.32 is: 244.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.05 : 518.78 = 163.32 : x
  2. Step 2: Convert to fraction form
    346.05/518.78 = 163.32/x
  3. Step 3: Cross multiply
    346.05x = 518.78 × 163.32
  4. Step 4: Simplify right side
    346.05x = 84,727.15
  5. Step 5: Solve for x
    x = 84,727.15/346.05
  6. Step 6: Final answer
    x = 244.84

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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.