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Finding the Fourth Proportional to 425.13, 637.97 and 262.23

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Solution

The fourth proportional to 425.13, 637.97 and 262.23 is: 393.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.13 : 637.97 = 262.23 : x
  2. Step 2: Convert to fraction form
    425.13/637.97 = 262.23/x
  3. Step 3: Cross multiply
    425.13x = 637.97 × 262.23
  4. Step 4: Simplify right side
    425.13x = 167,293.56
  5. Step 5: Solve for x
    x = 167,293.56/425.13
  6. Step 6: Final answer
    x = 393.51

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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.