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Finding the Fourth Proportional to 493.10, 680.50 and 272.06

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Solution

The fourth proportional to 493.10, 680.50 and 272.06 is: 375.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    493.10 : 680.50 = 272.06 : x
  2. Step 2: Convert to fraction form
    493.10/680.50 = 272.06/x
  3. Step 3: Cross multiply
    493.10x = 680.50 × 272.06
  4. Step 4: Simplify right side
    493.10x = 185,136.83
  5. Step 5: Solve for x
    x = 185,136.83/493.10
  6. Step 6: Final answer
    x = 375.45

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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.