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Finding the Fourth Proportional to 346.79, 519.42 and 163.63

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Solution

The fourth proportional to 346.79, 519.42 and 163.63 is: 245.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.79 : 519.42 = 163.63 : x
  2. Step 2: Convert to fraction form
    346.79/519.42 = 163.63/x
  3. Step 3: Cross multiply
    346.79x = 519.42 × 163.63
  4. Step 4: Simplify right side
    346.79x = 84,991.40
  5. Step 5: Solve for x
    x = 84,991.40/346.79
  6. Step 6: Final answer
    x = 245.08

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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.