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Finding the Fourth Proportional to 346.64, 520.12 and 163.84

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Solution

The fourth proportional to 346.64, 520.12 and 163.84 is: 245.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    346.64 : 520.12 = 163.84 : x
  2. Step 2: Convert to fraction form
    346.64/520.12 = 163.84/x
  3. Step 3: Cross multiply
    346.64x = 520.12 × 163.84
  4. Step 4: Simplify right side
    346.64x = 85,216.46
  5. Step 5: Solve for x
    x = 85,216.46/346.64
  6. Step 6: Final answer
    x = 245.84

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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.