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Finding the Fourth Proportional to 347.43, 481.94 and 328.98

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Solution

The fourth proportional to 347.43, 481.94 and 328.98 is: 456.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    347.43 : 481.94 = 328.98 : x
  2. Step 2: Convert to fraction form
    347.43/481.94 = 328.98/x
  3. Step 3: Cross multiply
    347.43x = 481.94 × 328.98
  4. Step 4: Simplify right side
    347.43x = 158,548.62
  5. Step 5: Solve for x
    x = 158,548.62/347.43
  6. Step 6: Final answer
    x = 456.35

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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.