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Finding the Fourth Proportional to 346.58, 519.82 and 163.87

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Solution

The fourth proportional to 346.58, 519.82 and 163.87 is: 245.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.58 : 519.82 = 163.87 : x
  2. Step 2: Convert to fraction form
    346.58/519.82 = 163.87/x
  3. Step 3: Cross multiply
    346.58x = 519.82 × 163.87
  4. Step 4: Simplify right side
    346.58x = 85,184.12
  5. Step 5: Solve for x
    x = 85,184.12/346.58
  6. Step 6: Final answer
    x = 245.79

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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.