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Finding the Fourth Proportional to 493.45, 680.91 and 272.35

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Solution

The fourth proportional to 493.45, 680.91 and 272.35 is: 375.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.45 : 680.91 = 272.35 : x
  2. Step 2: Convert to fraction form
    493.45/680.91 = 272.35/x
  3. Step 3: Cross multiply
    493.45x = 680.91 × 272.35
  4. Step 4: Simplify right side
    493.45x = 185,445.84
  5. Step 5: Solve for x
    x = 185,445.84/493.45
  6. Step 6: Final answer
    x = 375.81

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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.