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Finding the Fourth Proportional to 494.61, 682.59 and 347.28

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Solution

The fourth proportional to 494.61, 682.59 and 347.28 is: 479.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    494.61 : 682.59 = 347.28 : x
  2. Step 2: Convert to fraction form
    494.61/682.59 = 347.28/x
  3. Step 3: Cross multiply
    494.61x = 682.59 × 347.28
  4. Step 4: Simplify right side
    494.61x = 237,049.86
  5. Step 5: Solve for x
    x = 237,049.86/494.61
  6. Step 6: Final answer
    x = 479.27

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.