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Finding the Fourth Proportional to 347.73, 521.07 and 324.90

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Solution

The fourth proportional to 347.73, 521.07 and 324.90 is: 486.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.73 : 521.07 = 324.90 : x
  2. Step 2: Convert to fraction form
    347.73/521.07 = 324.90/x
  3. Step 3: Cross multiply
    347.73x = 521.07 × 324.90
  4. Step 4: Simplify right side
    347.73x = 169,295.64
  5. Step 5: Solve for x
    x = 169,295.64/347.73
  6. Step 6: Final answer
    x = 486.86

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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.