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Finding the Fourth Proportional to 346.22, 519.79 and 243.56

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Solution

The fourth proportional to 346.22, 519.79 and 243.56 is: 365.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.22 : 519.79 = 243.56 : x
  2. Step 2: Convert to fraction form
    346.22/519.79 = 243.56/x
  3. Step 3: Cross multiply
    346.22x = 519.79 × 243.56
  4. Step 4: Simplify right side
    346.22x = 126,596.84
  5. Step 5: Solve for x
    x = 126,596.84/346.22
  6. Step 6: Final answer
    x = 365.65

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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.