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Finding the Fourth Proportional to 655.38, 982.72 and 346.50

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Solution

The fourth proportional to 655.38, 982.72 and 346.50 is: 519.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    655.38 : 982.72 = 346.50 : x
  2. Step 2: Convert to fraction form
    655.38/982.72 = 346.50/x
  3. Step 3: Cross multiply
    655.38x = 982.72 × 346.50
  4. Step 4: Simplify right side
    655.38x = 340,512.48
  5. Step 5: Solve for x
    x = 340,512.48/655.38
  6. Step 6: Final answer
    x = 519.56

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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.