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Finding the Fourth Proportional to 425.11, 637.60 and 165.23

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Solution

The fourth proportional to 425.11, 637.60 and 165.23 is: 247.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    425.11 : 637.60 = 165.23 : x
  2. Step 2: Convert to fraction form
    425.11/637.60 = 165.23/x
  3. Step 3: Cross multiply
    425.11x = 637.60 × 165.23
  4. Step 4: Simplify right side
    425.11x = 105,350.65
  5. Step 5: Solve for x
    x = 105,350.65/425.11
  6. Step 6: Final answer
    x = 247.82

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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.