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Finding the Fourth Proportional to 301.56, 416.22 and 203.40

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Solution

The fourth proportional to 301.56, 416.22 and 203.40 is: 280.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    301.56 : 416.22 = 203.40 : x
  2. Step 2: Convert to fraction form
    301.56/416.22 = 203.40/x
  3. Step 3: Cross multiply
    301.56x = 416.22 × 203.40
  4. Step 4: Simplify right side
    301.56x = 84,659.15
  5. Step 5: Solve for x
    x = 84,659.15/301.56
  6. Step 6: Final answer
    x = 280.74

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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.