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Finding the Fourth Proportional to 463.32, 694.52 and 257.78

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Solution

The fourth proportional to 463.32, 694.52 and 257.78 is: 386.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    463.32 : 694.52 = 257.78 : x
  2. Step 2: Convert to fraction form
    463.32/694.52 = 257.78/x
  3. Step 3: Cross multiply
    463.32x = 694.52 × 257.78
  4. Step 4: Simplify right side
    463.32x = 179,028.60
  5. Step 5: Solve for x
    x = 179,028.60/463.32
  6. Step 6: Final answer
    x = 386.41

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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.