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Finding the Fourth Proportional to 347.20, 521.04 and 130.96

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Solution

The fourth proportional to 347.20, 521.04 and 130.96 is: 196.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.20 : 521.04 = 130.96 : x
  2. Step 2: Convert to fraction form
    347.20/521.04 = 130.96/x
  3. Step 3: Cross multiply
    347.20x = 521.04 × 130.96
  4. Step 4: Simplify right side
    347.20x = 68,235.40
  5. Step 5: Solve for x
    x = 68,235.40/347.20
  6. Step 6: Final answer
    x = 196.53

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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.