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Finding the Fourth Proportional to 44.55, 61.51 and 30.73

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Solution

The fourth proportional to 44.55, 61.51 and 30.73 is: 42.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.55 : 61.51 = 30.73 : x
  2. Step 2: Convert to fraction form
    44.55/61.51 = 30.73/x
  3. Step 3: Cross multiply
    44.55x = 61.51 × 30.73
  4. Step 4: Simplify right side
    44.55x = 1,890.20
  5. Step 5: Solve for x
    x = 1,890.20/44.55
  6. Step 6: Final answer
    x = 42.43

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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.