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Finding the Fourth Proportional to 325.45, 490.36 and 294.64

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Solution

The fourth proportional to 325.45, 490.36 and 294.64 is: 443.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    325.45 : 490.36 = 294.64 : x
  2. Step 2: Convert to fraction form
    325.45/490.36 = 294.64/x
  3. Step 3: Cross multiply
    325.45x = 490.36 × 294.64
  4. Step 4: Simplify right side
    325.45x = 144,479.67
  5. Step 5: Solve for x
    x = 144,479.67/325.45
  6. Step 6: Final answer
    x = 443.94

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.