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Finding the Fourth Proportional to 347.19, 520.38 and 193.04

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Solution

The fourth proportional to 347.19, 520.38 and 193.04 is: 289.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.19 : 520.38 = 193.04 : x
  2. Step 2: Convert to fraction form
    347.19/520.38 = 193.04/x
  3. Step 3: Cross multiply
    347.19x = 520.38 × 193.04
  4. Step 4: Simplify right side
    347.19x = 100,451.55
  5. Step 5: Solve for x
    x = 100,451.55/347.19
  6. Step 6: Final answer
    x = 289.33

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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.