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Finding the Fourth Proportional to 347.33, 479.31 and 189.96

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Solution

The fourth proportional to 347.33, 479.31 and 189.96 is: 262.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.33 : 479.31 = 189.96 : x
  2. Step 2: Convert to fraction form
    347.33/479.31 = 189.96/x
  3. Step 3: Cross multiply
    347.33x = 479.31 × 189.96
  4. Step 4: Simplify right side
    347.33x = 91,048.99
  5. Step 5: Solve for x
    x = 91,048.99/347.33
  6. Step 6: Final answer
    x = 262.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.