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Finding the Fourth Proportional to 225.68, 338.54 and 157.23

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Solution

The fourth proportional to 225.68, 338.54 and 157.23 is: 235.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.68 : 338.54 = 157.23 : x
  2. Step 2: Convert to fraction form
    225.68/338.54 = 157.23/x
  3. Step 3: Cross multiply
    225.68x = 338.54 × 157.23
  4. Step 4: Simplify right side
    225.68x = 53,227.86
  5. Step 5: Solve for x
    x = 53,227.86/225.68
  6. Step 6: Final answer
    x = 235.86

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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.