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Finding the Fourth Proportional to 47.95, 65.81 and 43.85

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Solution

The fourth proportional to 47.95, 65.81 and 43.85 is: 60.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    47.95 : 65.81 = 43.85 : x
  2. Step 2: Convert to fraction form
    47.95/65.81 = 43.85/x
  3. Step 3: Cross multiply
    47.95x = 65.81 × 43.85
  4. Step 4: Simplify right side
    47.95x = 2,885.67
  5. Step 5: Solve for x
    x = 2,885.67/47.95
  6. Step 6: Final answer
    x = 60.18

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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.