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Finding the Fourth Proportional to 336.45, 464.22 and 257.85

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Solution

The fourth proportional to 336.45, 464.22 and 257.85 is: 355.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    336.45 : 464.22 = 257.85 : x
  2. Step 2: Convert to fraction form
    336.45/464.22 = 257.85/x
  3. Step 3: Cross multiply
    336.45x = 464.22 × 257.85
  4. Step 4: Simplify right side
    336.45x = 119,698.61
  5. Step 5: Solve for x
    x = 119,698.61/336.45
  6. Step 6: Final answer
    x = 355.77

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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.