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Finding the Fourth Proportional to 347.08, 519.31 and 207.75

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Solution

The fourth proportional to 347.08, 519.31 and 207.75 is: 310.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.08 : 519.31 = 207.75 : x
  2. Step 2: Convert to fraction form
    347.08/519.31 = 207.75/x
  3. Step 3: Cross multiply
    347.08x = 519.31 × 207.75
  4. Step 4: Simplify right side
    347.08x = 107,886.65
  5. Step 5: Solve for x
    x = 107,886.65/347.08
  6. Step 6: Final answer
    x = 310.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.