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Finding the Fourth Proportional to 44.52, 66.25 and 42.09

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Solution

The fourth proportional to 44.52, 66.25 and 42.09 is: 62.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.52 : 66.25 = 42.09 : x
  2. Step 2: Convert to fraction form
    44.52/66.25 = 42.09/x
  3. Step 3: Cross multiply
    44.52x = 66.25 × 42.09
  4. Step 4: Simplify right side
    44.52x = 2,788.74
  5. Step 5: Solve for x
    x = 2,788.74/44.52
  6. Step 6: Final answer
    x = 62.63

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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.