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Finding the Fourth Proportional to 44, 66.24 and 38.16

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Solution

The fourth proportional to 44, 66.24 and 38.16 is: 57.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    44 : 66.24 = 38.16 : x
  2. Step 2: Convert to fraction form
    44/66.24 = 38.16/x
  3. Step 3: Cross multiply
    44x = 66.24 × 38.16
  4. Step 4: Simplify right side
    44x = 2,527.72
  5. Step 5: Solve for x
    x = 2,527.72/44
  6. Step 6: Final answer
    x = 57.45

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.