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Finding the Fourth Proportional to 350.64, 483.78 and 203.28

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Solution

The fourth proportional to 350.64, 483.78 and 203.28 is: 280.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    350.64 : 483.78 = 203.28 : x
  2. Step 2: Convert to fraction form
    350.64/483.78 = 203.28/x
  3. Step 3: Cross multiply
    350.64x = 483.78 × 203.28
  4. Step 4: Simplify right side
    350.64x = 98,344.83
  5. Step 5: Solve for x
    x = 98,344.83/350.64
  6. Step 6: Final answer
    x = 280.47

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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.