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Finding the Fourth Proportional to 203.66, 304.96 and 112.23

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Solution

The fourth proportional to 203.66, 304.96 and 112.23 is: 168.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    203.66 : 304.96 = 112.23 : x
  2. Step 2: Convert to fraction form
    203.66/304.96 = 112.23/x
  3. Step 3: Cross multiply
    203.66x = 304.96 × 112.23
  4. Step 4: Simplify right side
    203.66x = 34,225.10
  5. Step 5: Solve for x
    x = 34,225.10/203.66
  6. Step 6: Final answer
    x = 168.05

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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.