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Finding the Fourth Proportional to 462.29, 693.86 and 256.56

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Solution

The fourth proportional to 462.29, 693.86 and 256.56 is: 385.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    462.29 : 693.86 = 256.56 : x
  2. Step 2: Convert to fraction form
    462.29/693.86 = 256.56/x
  3. Step 3: Cross multiply
    462.29x = 693.86 × 256.56
  4. Step 4: Simplify right side
    462.29x = 178,015.44
  5. Step 5: Solve for x
    x = 178,015.44/462.29
  6. Step 6: Final answer
    x = 385.08

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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.