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Finding the Fourth Proportional to 490.08, 735.28 and 307.60

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Solution

The fourth proportional to 490.08, 735.28 and 307.60 is: 461.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    490.08 : 735.28 = 307.60 : x
  2. Step 2: Convert to fraction form
    490.08/735.28 = 307.60/x
  3. Step 3: Cross multiply
    490.08x = 735.28 × 307.60
  4. Step 4: Simplify right side
    490.08x = 226,172.13
  5. Step 5: Solve for x
    x = 226,172.13/490.08
  6. Step 6: Final answer
    x = 461.50

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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.