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Finding the Fourth Proportional to 221.19, 332.15 and 152.73

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Solution

The fourth proportional to 221.19, 332.15 and 152.73 is: 229.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    221.19 : 332.15 = 152.73 : x
  2. Step 2: Convert to fraction form
    221.19/332.15 = 152.73/x
  3. Step 3: Cross multiply
    221.19x = 332.15 × 152.73
  4. Step 4: Simplify right side
    221.19x = 50,728.51
  5. Step 5: Solve for x
    x = 50,728.51/221.19
  6. Step 6: Final answer
    x = 229.34

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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.