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Finding the Fourth Proportional to 44.45, 66.40 and 35.41

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Solution

The fourth proportional to 44.45, 66.40 and 35.41 is: 52.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.45 : 66.40 = 35.41 : x
  2. Step 2: Convert to fraction form
    44.45/66.40 = 35.41/x
  3. Step 3: Cross multiply
    44.45x = 66.40 × 35.41
  4. Step 4: Simplify right side
    44.45x = 2,350.71
  5. Step 5: Solve for x
    x = 2,350.71/44.45
  6. Step 6: Final answer
    x = 52.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.