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Finding the Fourth Proportional to 44.64, 66.63 and 40.05

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Solution

The fourth proportional to 44.64, 66.63 and 40.05 is: 59.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.64 : 66.63 = 40.05 : x
  2. Step 2: Convert to fraction form
    44.64/66.63 = 40.05/x
  3. Step 3: Cross multiply
    44.64x = 66.63 × 40.05
  4. Step 4: Simplify right side
    44.64x = 2,668.53
  5. Step 5: Solve for x
    x = 2,668.53/44.64
  6. Step 6: Final answer
    x = 59.78

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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.