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Finding the Fourth Proportional to 464.45, 696.49 and 343.49

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Solution

The fourth proportional to 464.45, 696.49 and 343.49 is: 515.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    464.45 : 696.49 = 343.49 : x
  2. Step 2: Convert to fraction form
    464.45/696.49 = 343.49/x
  3. Step 3: Cross multiply
    464.45x = 696.49 × 343.49
  4. Step 4: Simplify right side
    464.45x = 239,233.01
  5. Step 5: Solve for x
    x = 239,233.01/464.45
  6. Step 6: Final answer
    x = 515.09

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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.