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Finding the Fourth Proportional to 44.21, 66.00 and 40.87

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Solution

The fourth proportional to 44.21, 66.00 and 40.87 is: 61.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.21 : 66.00 = 40.87 : x
  2. Step 2: Convert to fraction form
    44.21/66.00 = 40.87/x
  3. Step 3: Cross multiply
    44.21x = 66.00 × 40.87
  4. Step 4: Simplify right side
    44.21x = 2,697.43
  5. Step 5: Solve for x
    x = 2,697.43/44.21
  6. Step 6: Final answer
    x = 61.01

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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.