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Finding the Fourth Proportional to 347.19, 479.16 and 199.85

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Solution

The fourth proportional to 347.19, 479.16 and 199.85 is: 275.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.19 : 479.16 = 199.85 : x
  2. Step 2: Convert to fraction form
    347.19/479.16 = 199.85/x
  3. Step 3: Cross multiply
    347.19x = 479.16 × 199.85
  4. Step 4: Simplify right side
    347.19x = 95,760.13
  5. Step 5: Solve for x
    x = 95,760.13/347.19
  6. Step 6: Final answer
    x = 275.81

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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.