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Finding the Fourth Proportional to 44.57, 66.58 and 39.75

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Solution

The fourth proportional to 44.57, 66.58 and 39.75 is: 59.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.57 : 66.58 = 39.75 : x
  2. Step 2: Convert to fraction form
    44.57/66.58 = 39.75/x
  3. Step 3: Cross multiply
    44.57x = 66.58 × 39.75
  4. Step 4: Simplify right side
    44.57x = 2,646.21
  5. Step 5: Solve for x
    x = 2,646.21/44.57
  6. Step 6: Final answer
    x = 59.37

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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.