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Finding the Fourth Proportional to 219.55, 303.23 and 145.73

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Solution

The fourth proportional to 219.55, 303.23 and 145.73 is: 201.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    219.55 : 303.23 = 145.73 : x
  2. Step 2: Convert to fraction form
    219.55/303.23 = 145.73/x
  3. Step 3: Cross multiply
    219.55x = 303.23 × 145.73
  4. Step 4: Simplify right side
    219.55x = 44,188.98
  5. Step 5: Solve for x
    x = 44,188.98/219.55
  6. Step 6: Final answer
    x = 201.28

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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.