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Finding the Fourth Proportional to 346.39, 518.55 and 230.43

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Solution

The fourth proportional to 346.39, 518.55 and 230.43 is: 344.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.39 : 518.55 = 230.43 : x
  2. Step 2: Convert to fraction form
    346.39/518.55 = 230.43/x
  3. Step 3: Cross multiply
    346.39x = 518.55 × 230.43
  4. Step 4: Simplify right side
    346.39x = 119,489.48
  5. Step 5: Solve for x
    x = 119,489.48/346.39
  6. Step 6: Final answer
    x = 344.96

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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.