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Finding the Fourth Proportional to 226.61, 312.76 and 133.36

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Solution

The fourth proportional to 226.61, 312.76 and 133.36 is: 184.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    226.61 : 312.76 = 133.36 : x
  2. Step 2: Convert to fraction form
    226.61/312.76 = 133.36/x
  3. Step 3: Cross multiply
    226.61x = 312.76 × 133.36
  4. Step 4: Simplify right side
    226.61x = 41,709.34
  5. Step 5: Solve for x
    x = 41,709.34/226.61
  6. Step 6: Final answer
    x = 184.06

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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.