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Finding the Fourth Proportional to 347.13, 481.32 and 328.68

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Solution

The fourth proportional to 347.13, 481.32 and 328.68 is: 455.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.13 : 481.32 = 328.68 : x
  2. Step 2: Convert to fraction form
    347.13/481.32 = 328.68/x
  3. Step 3: Cross multiply
    347.13x = 481.32 × 328.68
  4. Step 4: Simplify right side
    347.13x = 158,200.26
  5. Step 5: Solve for x
    x = 158,200.26/347.13
  6. Step 6: Final answer
    x = 455.74

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.