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Finding the Fourth Proportional to 347.21, 517.08 and 326.25

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Solution

The fourth proportional to 347.21, 517.08 and 326.25 is: 485.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.21 : 517.08 = 326.25 : x
  2. Step 2: Convert to fraction form
    347.21/517.08 = 326.25/x
  3. Step 3: Cross multiply
    347.21x = 517.08 × 326.25
  4. Step 4: Simplify right side
    347.21x = 168,696.74
  5. Step 5: Solve for x
    x = 168,696.74/347.21
  6. Step 6: Final answer
    x = 485.87

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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.