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Finding the Fourth Proportional to 347.45, 479.48 and 200.12

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Solution

The fourth proportional to 347.45, 479.48 and 200.12 is: 276.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.45 : 479.48 = 200.12 : x
  2. Step 2: Convert to fraction form
    347.45/479.48 = 200.12/x
  3. Step 3: Cross multiply
    347.45x = 479.48 × 200.12
  4. Step 4: Simplify right side
    347.45x = 95,955.24
  5. Step 5: Solve for x
    x = 95,955.24/347.45
  6. Step 6: Final answer
    x = 276.17

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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.