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Finding the Fourth Proportional to 343.21, 514.80 and 160.54

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Solution

The fourth proportional to 343.21, 514.80 and 160.54 is: 240.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    343.21 : 514.80 = 160.54 : x
  2. Step 2: Convert to fraction form
    343.21/514.80 = 160.54/x
  3. Step 3: Cross multiply
    343.21x = 514.80 × 160.54
  4. Step 4: Simplify right side
    343.21x = 82,645.99
  5. Step 5: Solve for x
    x = 82,645.99/343.21
  6. Step 6: Final answer
    x = 240.80

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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.