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Finding the Fourth Proportional to 45.06, 61.73 and 43.78

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Solution

The fourth proportional to 45.06, 61.73 and 43.78 is: 59.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.06 : 61.73 = 43.78 : x
  2. Step 2: Convert to fraction form
    45.06/61.73 = 43.78/x
  3. Step 3: Cross multiply
    45.06x = 61.73 × 43.78
  4. Step 4: Simplify right side
    45.06x = 2,702.32
  5. Step 5: Solve for x
    x = 2,702.32/45.06
  6. Step 6: Final answer
    x = 59.97

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.