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Finding the Fourth Proportional to 225.57, 338.21 and 152.34

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Solution

The fourth proportional to 225.57, 338.21 and 152.34 is: 228.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    225.57 : 338.21 = 152.34 : x
  2. Step 2: Convert to fraction form
    225.57/338.21 = 152.34/x
  3. Step 3: Cross multiply
    225.57x = 338.21 × 152.34
  4. Step 4: Simplify right side
    225.57x = 51,522.15
  5. Step 5: Solve for x
    x = 51,522.15/225.57
  6. Step 6: Final answer
    x = 228.41

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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.