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Finding the Fourth Proportional to 347.91, 479.96 and 207.96

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Solution

The fourth proportional to 347.91, 479.96 and 207.96 is: 286.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.91 : 479.96 = 207.96 : x
  2. Step 2: Convert to fraction form
    347.91/479.96 = 207.96/x
  3. Step 3: Cross multiply
    347.91x = 479.96 × 207.96
  4. Step 4: Simplify right side
    347.91x = 99,810.08
  5. Step 5: Solve for x
    x = 99,810.08/347.91
  6. Step 6: Final answer
    x = 286.88

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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.