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Finding the Fourth Proportional to 424.76, 637.66 and 262.76

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Solution

The fourth proportional to 424.76, 637.66 and 262.76 is: 394.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    424.76 : 637.66 = 262.76 : x
  2. Step 2: Convert to fraction form
    424.76/637.66 = 262.76/x
  3. Step 3: Cross multiply
    424.76x = 637.66 × 262.76
  4. Step 4: Simplify right side
    424.76x = 167,551.54
  5. Step 5: Solve for x
    x = 167,551.54/424.76
  6. Step 6: Final answer
    x = 394.46

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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.