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Finding the Fourth Proportional to 425.09, 637.59 and 262.73

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Solution

The fourth proportional to 425.09, 637.59 and 262.73 is: 394.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.09 : 637.59 = 262.73 : x
  2. Step 2: Convert to fraction form
    425.09/637.59 = 262.73/x
  3. Step 3: Cross multiply
    425.09x = 637.59 × 262.73
  4. Step 4: Simplify right side
    425.09x = 167,514.02
  5. Step 5: Solve for x
    x = 167,514.02/425.09
  6. Step 6: Final answer
    x = 394.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.