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Finding the Fourth Proportional to 203.04, 304.63 and 81.34

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Solution

The fourth proportional to 203.04, 304.63 and 81.34 is: 122.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.04 : 304.63 = 81.34 : x
  2. Step 2: Convert to fraction form
    203.04/304.63 = 81.34/x
  3. Step 3: Cross multiply
    203.04x = 304.63 × 81.34
  4. Step 4: Simplify right side
    203.04x = 24,777.64
  5. Step 5: Solve for x
    x = 24,777.64/203.04
  6. Step 6: Final answer
    x = 122.03

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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.