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Finding the Fourth Proportional to 490.93, 735.45 and 328.66

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Solution

The fourth proportional to 490.93, 735.45 and 328.66 is: 492.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.93 : 735.45 = 328.66 : x
  2. Step 2: Convert to fraction form
    490.93/735.45 = 328.66/x
  3. Step 3: Cross multiply
    490.93x = 735.45 × 328.66
  4. Step 4: Simplify right side
    490.93x = 241,713.00
  5. Step 5: Solve for x
    x = 241,713.00/490.93
  6. Step 6: Final answer
    x = 492.36

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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.