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Finding the Fourth Proportional to 347.81, 479.99 and 344.03

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Solution

The fourth proportional to 347.81, 479.99 and 344.03 is: 474.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.81 : 479.99 = 344.03 : x
  2. Step 2: Convert to fraction form
    347.81/479.99 = 344.03/x
  3. Step 3: Cross multiply
    347.81x = 479.99 × 344.03
  4. Step 4: Simplify right side
    347.81x = 165,129.42
  5. Step 5: Solve for x
    x = 165,129.42/347.81
  6. Step 6: Final answer
    x = 474.78

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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.