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Finding the Fourth Proportional to 617.08, 926.22 and 343.30

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Solution

The fourth proportional to 617.08, 926.22 and 343.30 is: 515.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    617.08 : 926.22 = 343.30 : x
  2. Step 2: Convert to fraction form
    617.08/926.22 = 343.30/x
  3. Step 3: Cross multiply
    617.08x = 926.22 × 343.30
  4. Step 4: Simplify right side
    617.08x = 317,971.33
  5. Step 5: Solve for x
    x = 317,971.33/617.08
  6. Step 6: Final answer
    x = 515.28

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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.