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Finding the Fourth Proportional to 462.38, 637.94 and 275.78

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Solution

The fourth proportional to 462.38, 637.94 and 275.78 is: 380.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.38 : 637.94 = 275.78 : x
  2. Step 2: Convert to fraction form
    462.38/637.94 = 275.78/x
  3. Step 3: Cross multiply
    462.38x = 637.94 × 275.78
  4. Step 4: Simplify right side
    462.38x = 175,933.38
  5. Step 5: Solve for x
    x = 175,933.38/462.38
  6. Step 6: Final answer
    x = 380.50

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.