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Finding the Fourth Proportional to 294.46, 441.32 and 257.81

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Solution

The fourth proportional to 294.46, 441.32 and 257.81 is: 386.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    294.46 : 441.32 = 257.81 : x
  2. Step 2: Convert to fraction form
    294.46/441.32 = 257.81/x
  3. Step 3: Cross multiply
    294.46x = 441.32 × 257.81
  4. Step 4: Simplify right side
    294.46x = 113,773.21
  5. Step 5: Solve for x
    x = 113,773.21/294.46
  6. Step 6: Final answer
    x = 386.38

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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.