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Finding the Fourth Proportional to 424.26, 637.20 and 262.26

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Solution

The fourth proportional to 424.26, 637.20 and 262.26 is: 393.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.26 : 637.20 = 262.26 : x
  2. Step 2: Convert to fraction form
    424.26/637.20 = 262.26/x
  3. Step 3: Cross multiply
    424.26x = 637.20 × 262.26
  4. Step 4: Simplify right side
    424.26x = 167,112.07
  5. Step 5: Solve for x
    x = 167,112.07/424.26
  6. Step 6: Final answer
    x = 393.89

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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.