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Finding the Fourth Proportional to 225.56, 339.57 and 153.88

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Solution

The fourth proportional to 225.56, 339.57 and 153.88 is: 231.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.56 : 339.57 = 153.88 : x
  2. Step 2: Convert to fraction form
    225.56/339.57 = 153.88/x
  3. Step 3: Cross multiply
    225.56x = 339.57 × 153.88
  4. Step 4: Simplify right side
    225.56x = 52,253.03
  5. Step 5: Solve for x
    x = 52,253.03/225.56
  6. Step 6: Final answer
    x = 231.66

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.