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Finding the Fourth Proportional to 347.20, 517.71 and 332.16

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Solution

The fourth proportional to 347.20, 517.71 and 332.16 is: 495.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.20 : 517.71 = 332.16 : x
  2. Step 2: Convert to fraction form
    347.20/517.71 = 332.16/x
  3. Step 3: Cross multiply
    347.20x = 517.71 × 332.16
  4. Step 4: Simplify right side
    347.20x = 171,962.55
  5. Step 5: Solve for x
    x = 171,962.55/347.20
  6. Step 6: Final answer
    x = 495.28

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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.