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Finding the Fourth Proportional to 45.48, 67.77 and 43.44

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Solution

The fourth proportional to 45.48, 67.77 and 43.44 is: 64.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    45.48 : 67.77 = 43.44 : x
  2. Step 2: Convert to fraction form
    45.48/67.77 = 43.44/x
  3. Step 3: Cross multiply
    45.48x = 67.77 × 43.44
  4. Step 4: Simplify right side
    45.48x = 2,943.93
  5. Step 5: Solve for x
    x = 2,943.93/45.48
  6. Step 6: Final answer
    x = 64.73

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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.