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Finding the Fourth Proportional to 347.22, 518.13 and 326.43

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Solution

The fourth proportional to 347.22, 518.13 and 326.43 is: 487.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.22 : 518.13 = 326.43 : x
  2. Step 2: Convert to fraction form
    347.22/518.13 = 326.43/x
  3. Step 3: Cross multiply
    347.22x = 518.13 × 326.43
  4. Step 4: Simplify right side
    347.22x = 169,133.18
  5. Step 5: Solve for x
    x = 169,133.18/347.22
  6. Step 6: Final answer
    x = 487.11

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.