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Finding the Fourth Proportional to 44.86, 66.89 and 42.97

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Solution

The fourth proportional to 44.86, 66.89 and 42.97 is: 64.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    44.86 : 66.89 = 42.97 : x
  2. Step 2: Convert to fraction form
    44.86/66.89 = 42.97/x
  3. Step 3: Cross multiply
    44.86x = 66.89 × 42.97
  4. Step 4: Simplify right side
    44.86x = 2,874.26
  5. Step 5: Solve for x
    x = 2,874.26/44.86
  6. Step 6: Final answer
    x = 64.07

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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.