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Finding the Fourth Proportional to 43.17, 59.81 and 42.67

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Solution

The fourth proportional to 43.17, 59.81 and 42.67 is: 59.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    43.17 : 59.81 = 42.67 : x
  2. Step 2: Convert to fraction form
    43.17/59.81 = 42.67/x
  3. Step 3: Cross multiply
    43.17x = 59.81 × 42.67
  4. Step 4: Simplify right side
    43.17x = 2,552.09
  5. Step 5: Solve for x
    x = 2,552.09/43.17
  6. Step 6: Final answer
    x = 59.12

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.