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Finding the Fourth Proportional to 343.20, 514.64 and 160.68

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Solution

The fourth proportional to 343.20, 514.64 and 160.68 is: 240.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.20 : 514.64 = 160.68 : x
  2. Step 2: Convert to fraction form
    343.20/514.64 = 160.68/x
  3. Step 3: Cross multiply
    343.20x = 514.64 × 160.68
  4. Step 4: Simplify right side
    343.20x = 82,692.36
  5. Step 5: Solve for x
    x = 82,692.36/343.20
  6. Step 6: Final answer
    x = 240.95

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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.