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Finding the Fourth Proportional to 43.37, 65.12 and 27.15

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Solution

The fourth proportional to 43.37, 65.12 and 27.15 is: 40.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.37 : 65.12 = 27.15 : x
  2. Step 2: Convert to fraction form
    43.37/65.12 = 27.15/x
  3. Step 3: Cross multiply
    43.37x = 65.12 × 27.15
  4. Step 4: Simplify right side
    43.37x = 1,768.01
  5. Step 5: Solve for x
    x = 1,768.01/43.37
  6. Step 6: Final answer
    x = 40.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.